JP3192658U - Multi-layer castable anchor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multi-layer castable anchor capable of fixing an extension direction of a base arm portion of a base anchor and an extension direction of a fore arm portion of a tip anchor in an arbitrary direction. Since this anchor includes a fixing nut 3, the tip of the base anchor 1 is oriented so that the length of the tip arm portion 22 of the tip anchor 2 is in an arbitrary direction with respect to the extension direction of the base arm portion 14. The anchor 2 can be fixed to the base anchor 1. As a result, an anchor in which the base arm portion 14 and the forehead arm portion 22 extend in the intended direction can be embedded in the multi-layer castable. [Selection diagram] Fig. 1

Description

  The present invention is a multi-layer castable that is used by being embedded in a multi-layered amorphous refractory layer in which one end is held on the inner side surface of a casing of a refractory device such as an ash melting furnace, and the inner side surface is successively laminated. For anchors.

  Conventional multi-layer castable anchors have a base shaft portion that is a fixed portion that has a cap nut at one end and the other end fixed to an iron skin or the like, and a base arm portion that extends left and right from the central portion of the base shaft portion. It consisted of an anchor and a tip anchor having a bolt that is screwed to the cap nut at one end and a tip arm portion extending left and right on the other end side. In this multi-layer castable anchor, the other end of the base shaft portion of the base anchor is fixed to the inner wall surface of a fireproof device such as an ash melting furnace, and then the upper end surface of the cap nut at one end of the base shaft portion is exposed. Laminate one castable, and then screw the bolt of the first anchor to the exposed cap nut to integrate the base anchor and the first anchor, and then laminate the second castable to embed the first anchor, It is used.

  When using a conventional multi-layer castable anchor, it may be necessary to fix the base anchor and the tip anchor so that the direction in which the base arm portion of the base anchor extends and the direction in which the tip arm portion of the tip anchor extends perpendicularly. is there. Usually, the bolt of the tip anchor is screwed onto the cap nut of the base anchor, and the base anchor and the tip anchor are firmly fixed so that the tip of the bolt contacts the bottom of the cap nut. In this case, the direction in which the base arm portion of the base anchor extends and the direction in which the front arm portion of the front anchor extends cannot be regulated in a fixed direction, and the direction in which the base arm portion of the base anchor extends and the front arm portion of the front anchor extend. It is difficult to fix the base anchor and the tip anchor so that the directions are orthogonal to each other.

  The present invention eliminates such difficulties, and provides a multi-layer castable anchor that can fix the extending direction of the base arm portion of the base anchor and the extending direction of the front arm portion of the front anchor in an arbitrary direction.

  The inventor of the present invention has come up with the idea of newly incorporating a fixing nut into a cap nut and a bolt as a fixing portion of a base anchor and a tip anchor constituting a multi-layer castable anchor. That is, in a state where the fixing nut is screwed to the bolt in advance, the bolt is screwed to the cap nut, and the base arm of the base anchor is in a state before the tip of the bolt cannot be screwed any further on the bottom of the cap nut. Screw the front anchor to the target direction and stop the front anchor screw, then turn the fixing nut and the fixing nut contacts the cap nut. Thus, the present invention has been completed by contemplating fixing the base anchor and the tip anchor firmly by tightening the fixing nut.

  A multi-layer castable anchor according to the present invention includes a base shaft portion serving as a fixed portion in which one of a nut portion and a bolt portion screwed on the nut portion is fixed at one end, and the other end is fixed to an iron skin, and the like. For multi-layer castables comprising a base anchor consisting of a base arm part extending left and right from the central part and a tip anchor having the other end of the nut part and the bolt part at one end and a front arm part extending left and right at the other end side It is an anchor, The said bolt part has a fixing nut for rotation prevention, It is characterized by the above-mentioned.

  The multi-layer castable anchor of the present invention comprises a base anchor, a tip anchor, and a fixing nut. The base anchor includes a base shaft portion and a base arm portion. The base shaft portion has one of a nut portion and a bolt portion at one end and a fixed portion at the other end. The fixed portion may be a tip portion welded to an iron skin or the like, or an engaging portion that is engaged and held by a holding metal fitting fixed to the iron skin or the like. The base arm can be V-shaped or single-character. The tip anchor has a tip arm portion having the other of the nut portion and the bolt portion at one end and extending left and right on the other end side. The forearm portion can be V-shaped or single-letter shape like the base arm portion of the base anchor. The base arm portion of the base anchor and the tip arm portion of the tip anchor may be the same shape or different.

  The base arm portion of the base anchor is normally embedded in a castable layer as the first layer, and when the tip anchor is fixed, the extending direction of the base arm portion of the base anchor is unknown. Therefore, it is necessary that the direction in which the base arm portion of the base anchor extends is determined in advance and fixed to the iron skin or the like and the direction is stored. In order to make it easy to know the direction in which the base arm portion extends, a direction indication indicating the direction in which the base arm portion extends on the front end side of the bolt portion or the cap nut portion exposed on the surface of the castable layer of the first layer Is preferably provided. As the direction indication, a groove extending in the same direction as the base arm, a stamp, a drawn line, or the like can be adopted.

  The bolt portion is preferably screwed with a fixing nut in advance. It is preferable to temporarily fix the fixing nut so that it does not easily turn and fall off from the bolt portion. As the temporary fixing, the fixing nut can be temporarily fixed by screwing the cap nut with the axial length in which the screw groove for the bolt is formed and screwing the fixing nut into the shaft portion without the screw groove. .

  The multi-layer castable anchor of the present invention is usually formed of a metal such as iron, but may be formed of ceramics.

  Since the multi-layer castable anchor of the present invention is provided with a fixing nut, the extending direction of the leading arm portion of the leading anchor is set in an arbitrary direction with respect to the extending direction of the proximal arm portion of the anchoring base. Can be fixed to the anchor. As a result, the anchor for multi-layer castable of the present invention can be embedded in the multi-layer castable with anchors extending in the base arm portion and the forearm portion in the intended direction.

  By screwing the fixing nut to the bolt portion in advance and temporarily securing the fixing nut in that state, it becomes easy to fix the tip anchor to the base anchor, and the fixing nut can be prevented from being lost. In addition, by providing a direction indication indicating the extending direction of the base arm part on the front end side of the bolt part or the cap nut part located at the front end of the shaft part of the base anchor, even when the base arm part is buried in the castable and cannot be viewed. The extending direction of the arm portion is understood, and the extending direction of the leading arm portion of the leading anchor can be easily fixed to the target anchor in the target direction.

It is an expanded view which shows all the components of the anchor for multilayer castables shown in embodiment. It is a top view which shows the state which the anchor for multilayer castables shown in embodiment fastened. It is a top view which shows the state which fixedly fixed the fixing nut to the tip anchor of embodiment. It is the top view seen from the one end side of the base anchor of an embodiment.

  As shown in FIG. 1, the multi-layer castable anchor according to the embodiment of the present invention includes a base anchor 1, a tip anchor 2, and a fixing nut 3. The base anchor 1 includes a base shaft portion 11 made of an iron bar, a nut portion 12 welded to one end of the base shaft portion 11, a fixed portion 13 that extends perpendicularly from the other end of the base shaft portion 11, and the base shaft portion 1. And a base arm portion 14 formed by bending an iron bar welded to the side surface of the central portion in the axial direction into a V shape. On the end face side of the nut portion 12, as shown in FIG. 4, grooves 123 and 124 are formed on both sides centering on the screw hole 121 on the end face of the cylindrical portion 122 that defines the screw hole 121. These two grooves 123 and 124 are located on one line passing through the axis of the screw hole 121. As shown in FIG. 4, the direction in which the base arm portion 14 extends and the lines passing through the two grooves 123 and 124 are in parallel to each other. That is, it can be seen that the base arm portion 14 extends in the direction of the line passing through the two grooves 123 and 124.

  As shown in FIG. 2, the tip anchor 2 has a long bar formed by slightly bending the center of an iron rod that is a bolt part 21 by screwing the tip part on one end side and a short bar obtained by slightly bending one end part. It is formed by welding. The V-shaped part on the opposite side of the bolt part 21 constitutes the forearm part 22.

  The fixing nut 3 is a normal one and can be screwed to the bolt portion 21 of the tip anchor 2. As shown in FIG. 3, the fixing nut 3 is screwed over the threaded tip of the bolt portion 21 of the tip anchor 2, and the fixing nut 3 is bited into the unthreaded portion. 21 is screwed and temporarily fixed. As a result, the fixing nut 3 is not easily detached from the tip anchor 2.

  In the multi-layer castable anchor of this embodiment, the fixed portion 13 of the base anchor 1 is welded and fixed to the inner surface of the iron skin of a refractory device such as a melting furnace. Next, castable is applied to the inner side surface of the iron skin, and the base anchor 1 is embedded in a state where the front end surface of the nut portion 12 is left to form a first castable layer. Thereafter, the front anchor 2 is fixed to the buried base anchor 1 as follows. First, the bolt 21 of the tip anchor 2 in which the fixing nut 3 shown in FIG. 3 is screwed and temporarily fixed to the screw hole 121 of the nut 12 exposed from the castable layer of the nut 12 of the base anchor 1 is sufficiently deep. Screw to the end. In this state, the front anchor is rotated and stopped so that the extending direction of the front arm portion 22 of the front anchor 2 is orthogonal to the direction connecting the two grooves 123 and 124 of the nut portion 12. The fixing nut 3 is rotated downward while maintaining this orthogonality, and the fixing nut 3 is pressed firmly against the upper surface of the nut portion 12. Accordingly, the tip anchor 2 is firmly fixed to the base anchor 1, and the extending direction of the base arm portion 14 of the base anchor 1 and the extending direction of the tip arm portion 22 of the tip anchor 2 are orthogonal to each other. Thereafter, the second castable is laminated and the tip anchor 2 is embedded.

  The two castable layers are held on the iron skin by the multi-layer castable anchor of this embodiment. Since the extending directions of the embedded base arm portion 14 and the forearm portion 22 are orthogonal to each other, the extension directions of cracks generated in the castable layer differ depending on the difference in thermal expansion coefficient between the castable layer and the anchor. For this reason, the possibility that the crack extending from the base arm portion 14 and the crack extending from the leading arm portion 22 are combined to grow into a long crack is low. For this reason, the anchor of this embodiment can hold | maintain a castable layer in an iron skin over a long period of time.

1 .. Base anchor 2... Tip anchor 3 .. Fixing nut 11 .. Base shaft part 12 .. Nut part 13 .. Fixed part 14 .. Base arm part 21 .. Bolt part 22.

Claims (4)

A base shaft portion serving as a fixed portion that has one end of a nut portion and a bolt portion screwed on the nut at one end, and the other end fixed to an iron skin, etc., and a base arm portion extending left and right from the center portion of the base shaft portion A multi-layer castable anchor comprising: a base anchor comprising: and a tip anchor having the other end of the nut portion and the bolt portion at one end and a forearm portion extending from side to side on the other end side;
The bolt part has a fixing nut for preventing rotation, and the anchor for multi-layer castable.   The multi-layer castable anchor according to claim 1, wherein the arm portion and the forearm portion are V-shaped or single-character shaped.   3. The multilayer castable according to claim 1, wherein the nut portion or the bolt portion positioned at the one end of the base shaft portion has a direction indication indicating a direction in which the base arm portion extends from the base shaft portion at a tip end side thereof. For anchor.   The multi-layer castable anchor according to claim 1, wherein the fixing nut is temporarily fixed in a state of being screwed to the bolt portion.

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