JPH10288468A - Fixing structure for stud - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform fixing operation for an anchor stud easily and quickly. SOLUTION: The fixing structure for stud comprises a socket 1 being boded to an iron skin 3, and a stud 5 being fitted to the socket. The socket 1 has a tubular base part being bonded to the iron skin by welding, or the like, and a substantially L-shaped groove 2 is made of at least a pair of first axial slits 2a cut at symmetric positions on a diametral line at the forward end of the socket body 1 and a second slit 2b cut in the circumferential direction in the same plane from the inner end of the first slit 2a. A protrusion 6 to be fitted in the engaging groove 2 is provided at a position aligned with the first slit 2a on the outer surface at the base part of the stud 5. After being fitted in the first slit 2a, the protrusion 6 is turned by a specified angle and fitted in the second slit 2b thus fixing the stud 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anchor stud for preventing the detachment of detached irregular refractory when the inner surface of the furnace shell is lining with irregular refractory in various industrial kilns. Regarding the structure.

[0002]

2. Description of the Related Art As described above, when a furnace wall is constructed by applying an amorphous refractory (castable) to a furnace steel shell, the amorphous refractory is prevented from peeling off the steel shell and falling off. ,
A large number of anchor studs are fixed to the inner surface of the steel in advance at predetermined intervals, and the irregular refractory is applied to the studs so that the irregular refractory is firmly held by the studs. So that peeling-off does not occur. The above stud is usually "Y"
Generally, a Y stud having a letter shape and a V stud having a "V" shape are commonly used.

In the case where the lining is made of an irregular-shaped refractory only, the studs may be directly welded to the steel shell. However, when the lining has a multilayer structure, for example, a heat insulating board is provided on a backing, and a lining is provided. Applying a refractory castable to the, at the time of construction, a socket made of steel material with a length corresponding to the construction thickness of the heat insulation board and having a female screw engraved on the inner periphery is fixed to the steel skin by welding, and the above is attached to the heat insulation board After making a hole to pass through the socket, the socket is fitted into this hole, and a heat insulating board is stuck to the iron skin, and then the anchor stud (Y
The male screw of the leg of the stud) is screwed into the female screw of the socket to be attached and fire-resistant castable is constructed.

[0004]

However, in the above-mentioned conventional technique, since it is necessary to screw each stud into the socket and mount it, it takes a lot of time and effort to mount the stud, which requires extremely troublesome work. In addition to this, there is a problem that the screwing amount is not constant for each stud, and the mounting varies.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to enable a stud mounting operation to be performed simply and quickly. As a means for solving such a problem, the present invention provides: The socket comprises a socket fixed to an iron shell, and a stud fitted to the socket. The socket has a cylindrical shape whose base is fixed to the iron shell by welding or the like, and has at least two engagements with its peripheral wall. A stud is provided at the base of the stud with a protrusion that can be fitted into the engagement recess, and the stud is mounted by fitting the protrusion into the engagement recess.

At least one pair of first slits cut in the axial direction at symmetrical positions on the diameter line of the peripheral wall portion of the socket, and the engaging recesses are cut circumferentially in the same plane from inner ends of the first slits. The stud is formed in a substantially L-shape with the second slit provided, and the base of the stud is provided with a convex portion that can be fitted into the engaging concave portion on the outer surface at a position matching the first slit, and this convex portion is It is preferable that the stud can be mounted by inserting the protrusion into the second slit by rotating it by a predetermined angle after being inserted into one slit, since the structure can be simply and securely mounted.

[0007] By providing a concave portion into which the convex portion of the stud can be fitted in a direction parallel to the first slit at the inner end of the second slit, the mounting of the stud to the socket can be further assured. Can be.

Further, the engaging recess is a recess or a hole symmetrically formed on the inner surface of the peripheral wall of the socket, and the base of the stud projects from the outer peripheral surface of the base of the stud so as to fit into the engaging recess. As a flexible spring-type convex part, the stud can be attached by fitting this convex part into the engaging concave part.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 is a perspective view showing the appearance of a socket 1 according to the present invention, and FIGS. 2 (A) and 2 (B) also show side and plan views. The socket 1 is made of a cylindrical steel material. The engagement recesses 2 and 2 are formed symmetrically at symmetrical positions on the diameter line of the peripheral wall portion.

The engaging recesses 2 in the embodiment shown in FIGS. 1 to 4 are provided with a first slit 2 cut in the axial direction of the socket 1 at a symmetrical position on the diameter line of the distal end of the socket 1.
a, a second slit 2b cut from the inner end of the first slit 2a in the same horizontal cross-section over a length of 40 to 50 ° in the circumferential direction, and the first slit 2b at the inner end of the second slit 2b. And a concave portion 2c formed in a direction parallel to the slit 2a. The base of the socket 1 is shown in FIG.
As shown in FIG. 2A, it is fixed to the steel shell 3 of the furnace by welding 4.

The anchor stud 5 is illustrated in the case of a Y stud as shown in FIG. 3 (A), which is a front view in which a part is cut away and omitted, and FIG. 3 (B) is a bottom view of FIG. 3 (A). And
The leg 5a of the stud 5 has a cylindrical shape having an outer diameter capable of fitting as closely as possible to the inner periphery of the socket 1, and the base of the leg 5a has 1 slit 2
a, round shaft-shaped protrusions 6, 6 which can be fitted as closely as possible into the second slits 2b and the recesses 2c are projected at symmetrical positions on the diameter line.

FIG. 4 shows a cross section of an example of an actually installed state. In FIG. 4, reference numeral 7 denotes a heat insulating board, and reference numeral 8 denotes an amorphous refractory (castable).

Since this embodiment has the above configuration, FIG.
As shown in FIG. 1, the sockets 1 are welded to the inner surface of the steel shell 3 at a predetermined interval,
Fit the holes and paste.

Next, the protrusions 6, 6 projecting from the base of the leg 5a of the stud 5 are fitted into the first slits 2a, 2a of the engaging recesses 2, 2 of the socket 1, and the protrusions 6 , 6
When the stud 5 is rotated in the direction of the second slits 2b, 2b when it strikes the innermost ends of the first slits 2a, 2a,
The protrusions 6 and 6 of the stud 5 reach the positions of the recesses 2c and 2c, and when the stud 5 is slightly pulled, the protrusions 6 and 6 become the recesses 2c.
c, 2c, and are attached again without rotating in the return direction (the state shown in FIG. 4).

If the stud 5 is buried by laying the irregular-shaped refractory 8 in this way, the stud 5 serves as an anchor to prevent the irregular-shaped refractory 8 from peeling off and falling off.

FIGS. 5 and 6 show another embodiment of the present invention. FIG. 5 is a front view of the socket 1 ', and FIG. 6 is a sectional view of the stud 5' at the convex position. In the embodiment, an engaging concave portion 2 'formed of a through-hole (or a depression) is formed at a symmetrical position on the inner peripheral surface diameter line of the peripheral wall portion of the socket 1', and a convex portion having a habit of elastically projecting is formed at the base of the stud 5 '. 6 ', 6' are provided at positions where they can be fitted into the engaging recesses 2 ', 2'.

In the example of FIG. 6, recesses 9, 9 are formed at symmetrical positions on the diameter line of the base of the stud 5 ', and springs 10, 10 are formed therein. The spring 1 is inserted and the inner end thereof is fixed in the recesses 9, 9.
Pin-shaped projections 6 ', 6' are fixed to 0, 10, so that the projections 6 ', 6' can come out of the recesses 9, 9 along the inner surfaces of the recesses 9, 9, respectively.

Therefore, the base of the stud 5 'is fitted into the socket 1', and the projections 6 ', 6' are pulled into the inner surface of the peripheral wall of the socket 1 'against the springs 10, 10 so as to be engaged. If the protrusions 6 ', 6' are positioned at the position of the mating recess 2 ', the protrusions 6', 6 'are fitted into the engagement recess 2' by the bias of the springs 10, 10, and the stud 5 'does not come off. Mounted as

The projections 6 ', 6' and the engagement recess 2 'are not only provided at two symmetrical positions on the diameter line, but may be provided at three or four equiangular positions depending on the size of the stud 5'. Optional. Also, the projections 6 ', 6' and the springs 10, 1
The shape and structure of 0 are not limited to the illustrated example.

[0020]

As described above, according to the present invention, when the stud is mounted, the base can be inserted into the socket and the projection and the engagement recess can be fitted so that the stud cannot be pulled out. The stud mounting work at the time of construction becomes very simple, and quick work becomes possible, and the work efficiency can be greatly improved. According to the second aspect of the present invention, since the protrusion of the base of the stud is simply inserted into the first slit of the engagement recess and then turned by a predetermined angle, the mounting operation is further facilitated. The optimum value can be easily obtained by taking into account the specific gravity of the refractory and the construction thickness by taking into account the thickness of the steel material, the thickness of the protruding portion of the stud, the depth of the first slit, etc. it can. Further, according to the third aspect, the stud can be reliably prevented from coming off.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a socket according to the present invention.

2A is a front view of a state in which the socket of FIG. 1 is welded to a steel shell, and FIG. 2B is a plan view.

3A is a front view in which a part of a stud (Y stud) is partially notched, and FIG. 3B is a bottom view thereof.

FIG. 4 is a partial cross-sectional view after construction.

FIG. 5 is a front view of a socket according to another embodiment of the present invention.

FIG. 6 is a cross-sectional view of the stud at the position of the protrusion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Socket 2, 2 'engagement recessed part 2a 1st slit 2b 2nd slit 2c recessed part 3 Iron skin 5, 5' Stud (Y stud) 5a Leg part 6, 6 'convex part 7 Thermal insulation board 8 Irregular refractory

Claims (4)

[Claims] 1. An anchor stud for attaching an irregular refractory to a steel shell, comprising: a socket fixed to the steel shell; and a stud fitted to the socket. Has a cylindrical shape fixed to the steel skin by welding or the like, and has at least two engaging recesses on its peripheral wall portion, and has a convex portion that can fit into the engaging recess at the base of the stud. A stud mounting structure, wherein a stud is mounted by fitting a projection into the engagement recess. 2. The at least one pair of first slits cut in the axial direction at symmetrical positions on the diameter line of the peripheral wall portion of the socket, and the engaging concave portion extends in the same plane from the inner end of the first slit. The stud has a convex portion which can be fitted into the engaging concave portion on the outer surface at a position aligned with the first slit. The stud mounting structure according to claim 1, wherein the stud is mounted by fitting the protrusion into the first slit and then rotating the protrusion by a predetermined angle to fit the protrusion into the second slit. 3. A stud mounting structure according to claim 2, further comprising a concave portion at an inner end of said second slit, in which a convex portion of said stud is fitted in a direction parallel to said first slit. 4. The engaging recess is a recess or a hole formed symmetrically on the inner surface of the peripheral wall of the socket, and the base of the stud is formed from the outer peripheral surface of the base of the stud so as to fit into the engaging recess. The stud mounting structure according to claim 1, wherein the stud is mounted by fitting the protrusion into the engaging recess as a spring-type protrusion that can be freely retracted.