JP3382733B2 - Shelf configuration support - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shelf assembly used for firing various ceramic products such as ceramics, tiles, sanitary ware, and grindstones in a kiln. Related to a strut for configuration. [0002] Generally, when ceramic products such as ceramics and tiles are fired in a kiln of a continuous furnace such as a shuttle kiln or a tunnel furnace, shelves are placed on a kiln truck at predetermined intervals. 2. Description of the Related Art There is a method in which an object to be fired is placed on an assembled refractory shelf and fired. With regard to the columns used to support the shelves when constructing this shelf assembly, various types of structures have been proposed in addition to the supporting methods. A representative one is shown in FIG. A support 21 shown in FIG. 4A is made of a thick and short solid prismatic refractory block, and is disposed at a corner between the respective shelves 22 to form a shelf. Is configured. The column 31 shown in FIG. 4B is a so-called multi-stage column (multi-lug) column in which projections (claws) 31a for mounting a shelf board are provided in multiple stages. FIG. 4 (c) shows a stacking system in which cylindrical short columns 41 having fitting portions 41a and 41b are stacked, and a horizontal beam for mounting a shelf plate at a predetermined position in an intermediate portion. A column 41 'having a hole through which the hole 43 is formed is provided. 4D is provided with a notch in the horizontal direction, and is used by being joined to a corner of the shelf 52 by a joining material 54 such as mortar. [0004] Various types of elements such as stability, light weight, workability, and strength are required for such a column for a shelf assembly. Among these elements, There are many things that are contrary to the actual construction of the columns, and therefore, at present, all of the above-mentioned conventional columns are used with inconvenience. [0005] For example, in the column 21 shown in FIG.
As the use is repeated, the columns become uneven in size due to distortion and adhesion of foreign matters, and thus, there is a problem that rattling is remarkably caused in the shelf assembly and stability is lacking. In addition, there are also problems such as a large number of man-hours required for the shelf assembly, poor workability, and a large heat capacity due to a solid support, resulting in a large amount of heat taken out of the kiln. The column 31 in FIG. 4B has a problem that the shape and complexity of the column 31 make molding and processing difficult, resulting in high manufacturing costs, and a high bending strength is required, so that the materials used are limited. Further, if even one step breaks the protrusions 31a due to heat history or careless handling, use of the protrusions 31a causes a problem. The struts 41, 41 'in FIG. 4 (c) are provided with three-dimensional fitting portions 41a, 41b in their respective stacked portions, but these portions are liable to be distorted due to thermal history, and the higher the stacking, the higher the height. There were problems such as instability. The column 51 shown in FIG. 4D requires a lot of man-hours to join with the shelf 52, and the step of the shelf cannot be adjusted. [0006] The present invention has been made in view of such problems of the prior art.
Satisfies various elements required for columns for shelf construction, such as stability, lightness, workability, and strength, and arbitrarily sets and changes the spacing of the shelf plates according to the size of the material to be fired. It is an object of the present invention to provide a support for a shelf structure having a structure that can be performed. According to the present invention, there are provided (a) a hollow tubular mandrel erected on a kiln truck, and (b) an outer diameter of the mandrel through which the mandrel passes. And (c) a hollow portion having substantially the same diameter as the outer diameter of the mandrel through which the mandrel passes, and a protrusion for mounting a shelf board. And a supporting column for shelf assembly, wherein the supporting shaft is formed through the hollow portion of the spacer and the hollow portion of the receiving seat through the shaft. As described above, in the present invention, both the spacer and the seat have a hollow portion having substantially the same diameter as the outer diameter of the mandrel, and the hollow portion is passed through the mandrel so as to be supported. , The position accuracy and the stability are excellent, and the kiln truck does not collapse due to vibration or impact when moving. In addition, since the column is simply assembled by simply passing the hollow portion of the spacer and the seat through the mandrel, the work of assembling the shelf can be performed easily and quickly. The support of the present invention is usually constituted by alternately passing a plurality of spacers and seats through a mandrel, and by changing the dimension (length) of the spacers arranged between the seats, the vertical support is provided. It is possible to variably adjust the spacing of the seats in the direction, that is, the spacing between the mounting stages of the shelf. The number of spacers disposed between the seats may be one, or two or more spacers may be combined to have a desired size and disposed between the seats. . Therefore, if spacers of various dimensions are prepared in advance, or if a number of short spacers are prepared so that various dimensions can be obtained by combining them, setting and changing the mounting step interval can be performed extremely easily. Can be. Note that the same mandrel and seat can be used even if the spacing between the mounting steps is changed, which is also preferable in terms of economy. Further, in the present invention, since the hollow tubular body is used for the mandrel, the weight per pillar is reduced. In addition, this weight reduction is brought about by the fact that it is possible to produce a high-strength, thin-walled ceramic tubular body due to recent improvements in molding techniques and the like. The strength required for the support is satisfied, and the weight can be reduced by about 30 to 50% with respect to the solid support. Further, in the present invention, since it is not necessary to provide a three-dimensionally shaped fitting portion or the like on the upper and lower surfaces where the spacer and the seat are in contact with other spacers and the seat, the upper and lower surfaces of the spacer and the seat due to the heat history are not required. Even if the lower surface has some distortion, it can be repaired relatively easily by polishing or the like. As the material of the pillar of the present invention, a refractory material usually used for this kind of kiln tool, that is, nitride-bonded silicon carbide, oxide-bonded silicon carbide, alumina, mullite or the like can be used. Yes, each member that makes up the strut,
It is manufactured using various ceramic molding methods such as extrusion molding, cast molding, and press molding. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to embodiments shown in the drawings, but the present invention is not limited to these embodiments. FIG. 1 is an explanatory diagram showing one embodiment of the present invention. The spacer 4 and the receiving seat 6 have hollow portions 4a and 6a having substantially the same diameter as the outer diameter of the mandrel 2 through which the mandrel 2 passes. 1 is configured. The shape of the mandrel 2, which is a hollow tubular body, may be a circular tube as shown in FIG. 1 or a square tube as shown in FIG. 2 showing another embodiment of the present invention. There may be. The hollow portions of the spacer 4 and the seat 6 have a shape corresponding to the tubular shape of the shaft 2. The number of the spacers 4 and the seats 6 to be passed through the mandrel 2 is determined according to the required number of shelves to be placed. The receiving seat 6 has a projection 6b for mounting a shelf plate projecting in one direction as shown in FIG. 1 or two directions with the center axis 2 interposed therebetween as shown in FIG. In addition to the protruding ones,
Depending on the arrangement of the columns, the shape of the shelf, and the like, any suitable form can be prepared and used. Dimensions (length) of the spacers 4 that determine the spacing between the shelves
Is appropriately determined according to the size of the object to be fired. FIGS. 3A and 3B are a front view (a) and a side view (b) showing an example of a shelf structure using columns according to an example of the present invention. In this example, the columns are squarely arranged on a kiln trolley (not shown) in 4 rows × 3 columns, and the lower end of the center shaft 2 of each column is the lower end of a long spacer 4 ″ passed through the lowermost portion. Are fixed on the kiln truck by a column receiver 8 formed with a holding portion to which these are fitted in. The upper end of the mandrel 2 has a hole in which the upper end fits. The connecting columns 10 formed in plural in accordance with the arrangement intervals are connected and fixed to the center axis of the other support columns in each of the vertical and horizontal rows [0016] Outer rows in the front view of FIG. The support 1 'has a receiving seat 6' having a protrusion protruding only in one direction.
A support 6 ″ whose protrusion projects in two directions with respect to the center axis is used for the column 1 ″ in the middle row. By means of the spacers 4 ', the shelf board 1 is placed on the projections of these receiving seats 6', 6 "which are arranged at a predetermined spacing in the vertical direction.
2 is placed horizontally. As described above, the support of the present invention is
It has excellent stability and positioning accuracy when assembled on a shelf, is lightweight, and has excellent workability on shelf assembly. Also, according to the size and the like of the object to be fired, the mounting step interval of the shelf plate can be arbitrarily set or changed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view showing a structure of a support according to an embodiment of the present invention. FIG. 2 is an explanatory view showing a structure of a column according to another embodiment of the present invention. FIG. 3 is an explanatory diagram showing an example of a shelving structure using columns according to an example of the present invention. FIG. 4 is an explanatory view showing the structure of a conventional support. [Explanation of References] 1 ... prop, 2 ... center axis, 4 ... spacer, 4a ... hollow part,
DESCRIPTION OF SYMBOLS 6 ... Receiving seat, 6a ... Hollow part, 6b ... Projection part, 8 ... Post support, 10 ... Connection board, 12 ... Shelf board

Continuation of the front page (56) References JP-A-50-94007 (JP, A) JP-A-59-205584 (JP, A) JP-A-53-130255 (JP, U) JP-A-61-189197 (JP, A) , U) Actually open 572-123073 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F27D 3/12

Claims (1)

(57) [Claims] (1) (a) a hollow tubular mandrel erected on a kiln truck, (b) substantially the same outer diameter as the mandrel through which the mandrel passes. A tubular spacer having a hollow portion having a diameter, and (c) a hollow portion having substantially the same diameter as the outer diameter of the mandrel such that the mandrel passes therethrough,
A seat having a projection for mounting a shelf plate thereon, wherein the center axis is formed through the hollow portion of the spacer and the hollow portion of the seat. Prop.