JPH047513Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a kiln car used in a tunnel-type ceramic product kiln.

(Prior Art) A kiln car usually has wheels for running inside the furnace attached to a metal truck frame via bearings, and a cart made of refractory material is mounted on the top of the truck frame. This type of kiln car fires ceramic products while moving inside the high-temperature furnace, and although the bottom part of the car is separated from the inside of the furnace above the car by a sand seal plate, etc. It is unavoidable that these parts will also be exposed to high temperatures of around 200℃. For this reason, it is not easy to lubricate the bearing, and even if heat-resistant lubricant is injected into the bearing, it is thermally decomposed during use due to high temperatures and gradually turns into carbon and other oil residue that accumulates inside the bearing. I had to disassemble the bearing and clean it.

(Problems to be solved by the invention) The present invention solves the above-mentioned conventional problems and can sufficiently lubricate the bearing, and also eliminates the problem that inevitably occurs inside the bearing due to thermal decomposition of lubricating oil. This was completed to provide a kiln car that does not require manual disassembly and cleaning of oil residue.

(Means for Solving the Problems) The present invention, which was made to solve the above problems, has an oil supply hole that reaches the internal bearing and an oil scum discharge hole in the bearing case that supports the wheels for running inside the furnace. It is characterized by being transparent.

(Example) The present invention will be explained in more detail below with reference to the illustrated example.

In FIG. 1, 1 is a furnace wall, and 2 is a kiln car that runs on rails 3 laid on the hearth. The kiln car 2 of the present invention has a cart top 5 made of refractory placed on the upper surface of a metal truck frame 4, and wheels 7 are attached to the lower part via bearings 6. The bearing 6 is held on the outside by a bearing case 8 and is attached to the lower surface of the truck frame 4. As shown in FIG. 2, a pocket-shaped protrusion 9 is formed on the outer surface of the bearing case 8. An oil supply hole 10 is obliquely formed inside this protrusion 9. The lower end of the oil supply hole 10 faces the middle between the inner race and the outer race of the bearing 6, and the structure is such that when lubricating oil is supplied from the outside, the lubricating oil is distributed inside the bearing 6. Furthermore, in this example,
An oil sludge discharge hole 11 is transparently provided on the opposite surface of the bearing case 8 from the oil supply hole 10. The discharge hole 11 is transparently provided on the center diameter of the ball of the bearing 6, and in the embodiment, as shown in FIG.
Two discharge holes 11 are formed at positions 30° to a perpendicular line hanging from the center of the axle. Discharge hole 1
Reference numeral 1 indicates a hole for discharging oil scum inside the bearing 6 to the outside, and its hole diameter is 5 mm in the embodiment.

In the above embodiment, the discharge hole 11 was formed on the opposite side of the bearing case 8 from the oil supply hole 10.
The discharge hole 11 and the oil supply hole 10 may be formed on the same surface, or the discharge hole 11 may be formed on both sides of the bearing case 8.

(Function) The kiln car of the present invention configured as described above is
The work to be fired is placed on the cart 5 and moved through the furnace, and the work to be fired is performed in the same manner as in a conventional kiln car. However, in the present invention, since the oil supply hole 10 is formed in the bearing case 8, the inside of the bearing 6 can be sufficiently lubricated by injecting lubricating oil through the oil supply hole 10. Therefore, the kiln car moves smoothly within the furnace.

Furthermore, due to the high heat that the kiln car receives while running in the furnace, the lubricating oil is thermally decomposed and carbonaceous oil scum is gradually generated inside the bearing 6. 11 is formed, the oil scum inside the bearing 6 is gradually discharged to the outside through this discharge hole 11. Therefore, according to the present invention, the inside of the bearing 6 is not filled with oil scum as in the conventional case, and there is no increase in running resistance due to oil scum, and there is no need for frequent disassembly and cleaning.

(Effects of the invention) As described above, the present invention can sufficiently lubricate the bearings and naturally discharge oil scum that tends to accumulate inside the bearings, making running smoother. In addition, the trouble of disassembling and cleaning the bearing can be saved. Therefore, the present invention has extremely great practical value as a kiln car that eliminates the problems of the conventional kiln car.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a partial sectional view of the main part, and FIG. 3 is a partially cutaway rear view of the bearing case. 6...Bearing, 7...Wheel, 8...Bearing case, 10...Oil supply hole, 11...Drain hole.

Claims (1)

[Scope of utility model registration request] A kiln car characterized in that a bearing case 8 that supports wheels 7 for running inside the furnace is provided with an oil supply hole 10 that reaches an internal bearing 6 and an oil dregs discharge hole 11.