JPH0814771A - Car top structure of bogie of baking furnace - Google Patents

Abstract

PURPOSE:To enable bricks to be integrally connected to each other without using any mortar and further to facilitate a brick stacking or a brick repairing by a method wherein connecting surfaces of an upper brick and a lower brick are formed with irregular surfaces to be fitted from each other. CONSTITUTION:A bogie 1 is constructed such that it may run on rails 4 with wheels 3 arranged at a lower surface of a steel frame 2, enters or exits within a furnace body (a). A car top 5 is constructed by a brick 6 of a lower stage, a brick 7 at a middle stage and a brick 8 of an upper stage on the frame 2. A lower surface of the brick 8 at the upper stage is formed with an irregular triangle corrugated surface 9, an upper surface and a lower surface of the brick 7 at the middle stage are formed with the same irregular corrugated surfaces 10 and an upper surface of the brick 6 at the lower stage is formed with the same irregular surface 11, respectively and they are fitted to each other. Due to this fact, the bricks 6, 7 and 8 are merely piled up to each other without producing any displacement from each other, resulting in that the car top 5 is integrally formed. In addition, although the shape of the irregular surface is optional, the brick may easily shrinked and deformed during its molding and baking steps, so that their fitting portions require a slight clearance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a car top structure for a truck for a firing furnace, such as a tunnel furnace or a shuttle furnace, on which an object to be fired is placed and which goes in and out of the furnace.

[0002]

2. Description of the Related Art In a trolley for a firing furnace, a car top is formed by stacking a plurality of bricks on a steel frame having wheels on the bottom surface. Conventionally, bricks with a smooth surface are jointed with mortar. They are stacked while being joined as materials, and if firing and cooling are repeated over a long period of time, the bricks will crack or the joints will break, and the burned material and fragments of the casket will enter the cracks and cuts. Occasionally, an accident occurred when bricks spread and contacted the furnace wall.

Further, when mortar is used, a skilled person such as a bricklayer is required at the time of making the first trolley and repairing it.

[0004]

The problem to be solved by the present invention is that bricks may spread and come into contact with the furnace wall, or that a skilled person is required to make or repair a truck.

[0005]

As a means for solving such a problem, the present invention provides a car top structure of a truck for a firing furnace in which bricks are stacked in a plurality of stages on a frame,
The upper and lower bricks have a joint surface formed with concavities and convexities that fit together.

[0006]

The present invention has the above-mentioned structure, and since the concavo-convex fitting to each other is formed on the joining surfaces of the upper and lower bricks,
The upper and lower bricks cannot be displaced due to the fitting of the unevenness. For this reason, bricks can be integrally combined without using mortar, and even an unskilled person can easily perform brick stacking and broken brick repair when making a trolley, and
Even if a brick is cracked, it will not be displaced, so that the brick is prevented from spreading and coming into contact with the furnace wall.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a trolley, which travels on a rail 4 by wheels 3 provided on the lower surface of a steel frame 2 to move in and out of a furnace body a.

On the frame 2, a car top 5 is composed of a lower brick 6, a middle brick 7 and an upper brick 8, and a triangular corrugated unevenness 9 is formed on the lower surface of the upper brick 8 and a middle brick. Concavities and convexities 10 of the same shape are formed on the upper and lower surfaces of 7, and concavities and convexities 11 of the same shape are formed on the upper surface of the lower brick 6, and they are fitted together.

For this reason, the bricks 6, 7, and 8 do not shift when they are stacked, and the car top 5 is integrally formed.

The shape of the unevenness is arbitrary, but bricks are molded and
A slight gap is required in the fitting portion because it is easily contracted and deformed in the firing process.

In FIGS. 2 and 3, a hemispherical convex portion 13 is formed on the upper surface of the lower brick 12 and a hemispherical concave portion 15 is formed on the lower surface of the upper brick 14 so as to be fitted to each other. The gap is formed between the convex portion 13 and the concave portion 15.

In FIGS. 4 and 5, a rectangular trapezoidal convex portion 17 is formed on the upper surface of the lower brick 16 and a slightly larger rectangular trapezoidal concave portion 19 is formed on the lower surface of the upper brick 18 to be fitted to each other. And a gap is formed between the convex portion 17 and the concave portion 19. It should be noted that if bricks of several sizes are prepared, it is possible to handle bogies having different sizes.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a perspective view of a part of the brick of one embodiment of the present invention.

FIG. 3 is a cross-sectional view showing fitting of concavities and convexities using the brick of FIG.

FIG. 4 is a cross-sectional view showing fitting of concavities and convexities according to an embodiment of the present invention.

5 is a perspective view showing a convex portion of the brick on the lower side of FIG. 4. FIG.

[Explanation of symbols]

 1: Carriage 2: Frame 5: Car top 6, 7, 8, 12, 14, 16, 18: Brick 9, 10, 11: Concavo-convex 13, 17: Convex part 15, 19: Recessed part

Claims (1)

[Claims] 1. A car-top structure for a firing furnace trolley in which bricks are stacked in a plurality of layers on a frame, wherein concavities and convexities are formed on the joint surfaces of the upper and lower bricks so as to fit with each other. Top structure.