JPS642150Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application The present invention is designed to run along a running guide such as a rail laid in a firing furnace such as a tunnel furnace, and to fire the object to be fired placed on the top surface. This invention relates to a trolley for a firing furnace.

Problems to be solved by conventional techniques and ideas A trolley-type tunnel furnace in which the objects to be fired are continuously fired by running a cart loaded with the objects to be fired along the rails laid inside the tunnel furnace. So,
Generally, an underfire ring method is adopted in which a space is created between the top surface of the cart and the object to be fired, and the combustion flame from the burner is sent into this space.
The trolleys used for this type of combustion method are constructed by covering the upper surface of the steel frame with a heat insulating material to prevent heat conduction to the lower surface of the trolley, and leaving a space above it for blowing combustion flames into the firing target. The structure consists of shelf rods on which items are placed, but in the past, the insulation covering the top of the frame was made of fireproof blocks, so the weight of the trolley was large and a large drive was required to move the trolley. Not only does it require a lot of power, but it also has the disadvantage of a large heat load and poor thermal efficiency. For this reason, in recent years, there has been a trend to reduce the weight of the insulating material covering the top of the trolley by replacing the refractory block with a fibrous insulating material such as Ramic fiber. Ceramic fiber cannot be used on the support part of the supporting column because of the load acting on it.
Refractory blocks were arranged in a lattice pattern, with pillars supporting the shelf rods erected above them, and ceramic fiber was filled only in the squares between the blocks, resulting in a reduction in the proportion of blocks in the insulation material. The reality was that the weight still remained large and it was not possible to reduce the weight as expected.

The present invention has been developed in view of the above points, and does not require the use of refractory blocks as a heat insulating material. It is an object of the present invention to provide a trolley for a kiln that can achieve significant weight reduction.

Embodiment Hereinafter, an embodiment of the present invention will be described based on FIGS. 1 to 3.

1 is the frame of the truck, and the central H-beam 2
Groove shaped steels 3, 3 are arranged on the same plane at equal intervals on both sides of the groove, and a pair of groove shaped steels 3, 3 are arranged on the same plane at equal intervals, and a pair of corresponding groove steels 3, 3 are arranged at regular intervals with the upper surfaces thereof facing inwards in the left and right direction. angle iron 4,4
A total of four pairs of angle irons 4, 4 are welded to each other at equal intervals in the front and back direction, and a pair of angle irons 4, 4 corresponding to each other facing inward are also placed on both front and rear sides. The angle irons 5, 5 are welded, and angle irons 6 elongated in the front and rear direction are attached to both the left and right ends of these angle irons 4, 4 and 5, 5.
are welded across the same plane with the angle irons 6 facing inward, and a plurality of angle irons 6a, each with the inner surface facing the angle iron 6, are placed at positions spaced apart from each other by a certain distance inside the angle irons 6. Between the angle irons 4 and 4 that are paired with each other, and between the angle irons 4 and 4 that are adjacent to each other,
4 and angle irons 4, 4 and angle irons 5, 5 are welded on the same plane in a linear manner,
Bearings 8, which form a pair on the left and right, are fixed to the lower surfaces of both the front and rear ends of the left and right groove sections 3, 3 of this frame 1,
8 supports both ends of an axle 9 to which wheels 10, 10 are attached, respectively.

Paired angle irons 4 and 4 of this frame 1
and between the angle irons 5 and 5, and between the adjacent angle irons 4, 4 and the angle irons 4, 4, and between the angle irons 4, 4 and the angle irons 5, 5, there are elongated holes in the left and right direction, respectively. A lower plate 11 made of a steel plate is stretched on the same plane as the horizontal part of each angle iron 4, 5, and the upper surface of the lower plate 11 between the horizontal part of each pair of angle irons 4, 4, and each On the upper surface of the lower plate 11 between the pair of angle irons 5, 5, there are six steel support tubes 12, each with four in the center arranged at equal intervals inside the two angle irons 6a. The two ends of the angle irons 6a and 6 are arranged and welded at a distance smaller than the distance between the support tubes 12, and each support tube 12 is fitted with a cylinder made of refractory material. The lower end of the cylindrical upper support 14 made of refractory material is fitted into the fitting recess 15 formed by seating the inner peripheral surface of the upper end. ing. Also,
On the outer periphery of the upper surface of the frame 1, a plurality of rectangular cylindrical blocks 18, which are made of refractory material and have the same height as the lower struts 14, are placed inside each hollow of the frame 1.
A support tube 12 and a lower support column 14 located on the outer periphery of
The blocks 18 are arranged so as to accommodate the blocks 18, and their lower ends are fitted between a pair of angle irons 5, 5 or angle irons 6, 6a. A protruding strip 19 is formed to substantially tightly fit into a groove formed along the inner surface of the furnace wall to prevent the combustion flame from flowing down. A heat insulating material 23 made of ceramic fiber, glass fiber, etc. compressed into a low-density mat shape is filled between the lower pillar 14 and the lower pillar 14 up to the height of the upper surface of the lower pillar 14 and the block 18. A sheet 25 made of high-density compression molding of ceramic fiber, glass fiber, etc. is laid on its upper surface, and has a large number of fitting holes 26 that fit tightly into the outer peripheral surface of each upper support column 16. moreover,
The hollows of each of the lower struts 14 and the upper struts 16 are also filled with the same fibrous heat insulating material 23 as described above.

The upper end of each upper support column 16 is covered with a cover plate 28 made of refractory material, and the upper surface of each cover plate 28 is
Of the series of six lid plates 28 arranged in the left-right direction, the four in the center have circular fitting protrusions 29a at the center, and the two at both ends have approximately semicircular fitting protrusions 29b on the outside. On the upper surface of the series of lid plates 28, semicircular fitting grooves 32 are formed on both end surfaces in the length direction, and a plurality of engagement grooves 33 are formed at right angles to the length direction. A horizontal shelf rod 31 made of refractory material formed on the upper surface is connected to the adjacent lid plate 28 at both ends thereof.
the fitting groove 32 on the fitting protrusion 29a or 29.
A plurality of vertical shelf bars 3, also made of refractory material, are placed between a series of adjacent horizontal shelf bars 31 and 31.
5 corresponds to every other engagement groove 33 of the horizontal shelf bar 31, and the engagement grooves 3 of the horizontal shelf bar 31 adjacent to each other are attached to both ends thereof.
3, and these horizontal shelf rods 3
1 and the vertical shelf rod 35 constitute a mounting table 36 on which the sagger a containing the object to be fired is placed.

The trolley of this embodiment has the above-described structure, and is loaded with the sagger a containing the material to be fired on the mounting table 36 and runs on rails laid in the tunnel furnace. While the combustion flame blown from the burner between the sheet 25 and the mounting table 36 on the upper surface of the cart flows upward through the space between the saggers a, the object to be fired is fired. A lightweight fibrous heat insulating material 23 such as ceramic fiber or glass fiber is used as a heat insulating material to prevent heat from being transmitted to the lower surface of the truck.
16 is directly supported by the frame 1, there is no need for refractories to support the supports 14 and 16 in the heat insulating material, and by making the supports 14 and 16 themselves hollow, the trolley The overall weight is extremely light.

In addition, when supporting the columns 14 and 16 on the frame 1, the lower ends thereof are fitted into the steel support tube 12 welded to the upper surface of the frame 1, so that the columns 14 and 16 are firmly supported. It is also reliably supported and has little risk of shaking or tipping.

Furthermore, by making the supports 14 and 16 hollow, the contact area with the horizontal shelf rod 31 that extends over the upper surface of the support pillars becomes smaller, making it easier for the horizontal shelf rod 31 to shift. However, in this embodiment, a cover plate 28 made of refractory material is attached to the upper surface of the pillars 14 and 16, and a horizontal shelf bar 31 is placed on the upper surface of this cover plate 28.
Since the fitting grooves 32 of the horizontal shelf bar 31 are fitted into the fitting protrusions 29a, 29b for positioning, the horizontal shelf bar 31 is prevented from shifting and the upper ends of the columns 14, 16 are prevented from chipping.

In addition, by filling the hollow spaces of the columns 14 and 16 with the fibrous heat insulating material 23, it is possible to increase the strength of the columns 14 and 16 and increase the heat insulation effect while keeping the weight increase of the truck to a small level. becomes.

Furthermore, by arranging the hollow block 18 made of refractory material on the outer periphery of the upper surface of the frame 1, the outer periphery of the fibrous heat insulating material 23 can be prevented from losing its shape while also keeping the increase in weight of the truck to a small level. Prevented.

Structure and Effects of the Invention As specifically explained in the above embodiments,
The firing furnace trolley of the present invention has wheels pivoted on the lower surface of a frame made of steel in a lattice pattern, and a large number of hollow pillars made of refractory material are spaced apart from each other in the front and rear and left and right directions on the upper surface of the frame. A shelf bar made of refractory material is placed between the upper ends of the adjacent columns to form a mounting table for the object to be fired, and a fibrous heat insulating material is filled between each column. The main idea is to use a lightweight fibrous insulation material instead of a heavy refractory material to prevent the heat of the combustion flame from being transmitted to the underside of the trolley, and to use a lightweight fibrous insulation material instead of a heavy refractory material. By adopting a structure that is directly supported by the frame, there is no need for refractories to support the pillars within the insulation material, and since the pillars themselves are hollow to reduce their weight, the weight of the trolley can be definitely reduced. As a result, the running driving force of the truck can be reduced, the thermal load is reduced, and the thermal efficiency can be improved.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of an embodiment of the present invention;
FIG. 2 is a partial vertical sectional view thereof, and FIG. 3 is a partial enlarged perspective view thereof. 1: Frame, 2: H-shaped steel, 3: Groove-shaped steel,
4, 5, 6, 6a: Angle steel, 9: Axle, 10: Wheel, 12: Support cylinder, 14: Lower support, 16: Upper support, 18: Block, 23: Heat insulator, 28: Lid, 29a, 29b: Fitting protrusion, 31: Horizontal shelf bar,
32: Fitting groove, 35: Vertical shelf bar, 36: Mounting table,
a: Sagger.

Claims (1)

[Claims for Utility Model Registration] 1. A wheel is pivotally supported on the lower surface of a frame made of steel materials in a lattice shape, and a large number of hollow pillars made of refractory material are placed on the upper surface of the frame at intervals in the longitudinal and lateral directions. A shelf bar made of refractory material is placed between the upper ends of the adjacent columns to form a mounting table for the object to be fired, and a fibrous heat insulating material is filled between each column. A trolley for a kiln that is characterized by: 2. The trolley for a firing furnace according to claim 1, wherein a lower end of each of the pillars is fitted into a steel support tube fixed to the upper surface of the frame. 3. A utility model registration claim characterized in that a refractory lid is attached to the upper end of each of the pillars, and each of the lids and each of the shelf rods are positioned by fitting with projections and recesses. The trolley for a firing furnace according to item 1 or 2. 4. A trolley for a kiln according to claim 1, 2 or 3 of the utility model registration, characterized in that a fibrous heat insulating material is filled in the hollow of each of the pillars. 5 Utility model registration claim 1, 2, 3 or 4, characterized in that a peripheral wall made of refractory material is formed on the outer periphery of the upper surface of the frame.
Cart for firing furnace as described in section.