JPH045994Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention relates to a cart-type furnace in which the object to be processed is placed on a cart and the cart is carried into a furnace container for treatment. .

``Prior Art'' This type of cart-type furnace has conventionally been known as shown in FIGS. 3 and 4. The cart-type furnace shown in these figures has rails 2, 2 laid at the bottom of a horizontally placed cylindrical furnace vessel 1 along its length.
A trolley 3 is movable on the rails 2, 2, and a workpiece (not shown) is transported to the trolley 3.
The reactor is placed in the reactor vessel 1 and carried into the furnace vessel 1, and then processed as it is.

A heat insulating material 4 is attached to the inside of the furnace vessel 1 so as to cover the inner surface thereof, and a heat insulating material 5 is also attached to the upper surface of the trolley 3, so that when the trolley 3 is placed inside the furnace vessel 1, Those insulation materials 4,
5 forms a heating chamber 6, and the heating chamber 6 is closed by a lid 7 attached to the rear end of the truck 3 (left side in FIG. 3). An electric heater 8... is fixed inside the heat insulating material 4, and three electric heaters 9... are also attached to the top surface of the trolley 3.
These heaters 8 . . . , 9 . . . heat the object from its surroundings. In addition, reference numeral 10 denotes the furnace lid of the furnace vessel 1, 11 an outer furnace rail that is laid so as to be continuous with the rail 2, and 12 a rotatably attached to the outer furnace rail 11. 2 and the outside furnace rail 11 (the connected state is shown by a two-dot chain line in Fig. 3), 13... is the wheel of the trolley 3, and 14... supports the processed object. It is a pillar.

In such a cart-type furnace, by placing the object to be processed on a cart 3 outside the furnace and moving the cart 3, even if the object is long or heavy, it can be easily placed into the furnace vessel 1. In the case of small objects to be processed, by arranging them on the trolley 3, a large number of objects to be processed can be processed at once.

Incidentally, a large-capacity bus bar is generally used as a power supply conductor for supplying electric power to each of the heaters 8 . . . , 9 . And insulation material 4
For the heater 8... fixed inside the
A bus bar (not shown) may be connected directly and fixedly as appropriate by penetrating the furnace vessel 1 from outside the furnace.
Since the heaters 9 provided on the truck 3 move together with the truck 3, a bus bar from outside the furnace cannot be fixedly connected to them. Therefore, power is supplied to the heaters 9 by connecting a bus bar 15 provided inside the furnace and a bus bar 16 provided outside the furnace at a position near the opening of the furnace vessel 1.

That is, as shown in FIG. 3, the busbars 15 connected to the heaters 9 are pulled sideways on the bottom side of the truck 3 and guided to the rear end of the truck 3, and the bus bars 15 connected to the heaters 9 are guided to the rear end of the truck 3, and the busbars 15 connected to the heaters 9 are guided to the rear end of the truck 3, and the busbars 15 connected to the heaters 9 are guided to the rear end of the truck 3. As shown in FIG. 2, a flange-shaped electrode plate 17 is attached toward the inner peripheral surface of the furnace vessel 1. On the other hand, the bus bar 16 outside the furnace is
As shown in the figure, the furnace vessel 1 is penetrated, and a flange-shaped electrode plate 18 is attached to the tip thereof.
This electrode plate 18 is attached to the electrode plate 17 when the cart 3 is placed in the furnace vessel 1 (the state shown in FIG. 3).
It is fixed in the position where it butts up with the After the cart 3 is placed in the furnace vessel 1, the electrode plates 17 and 18 that are butted against each other are fastened together to connect the bus bars 15 and 16 and establish electrical continuity.

``Problem that the invention aims to solve'' By the way, the work of connecting the electrode plates 17 and 18 as described above has no choice but to be done manually by workers. It was impossible to achieve this. In addition, since it is necessary to secure a horizontal pulling space for the bus bar 15, an installation space for the electrode plates 17 and 18, and a work space for connecting them in the furnace vessel 1, the heaters 9, in particular, are divided into many systems. In such a case, there was a problem in that the diameter of the furnace vessel 1 had to be increased.

Furthermore, in the above-mentioned conventional cart-type furnace, the cart 3 may be significantly thermally deformed. That is,
During the heat treatment, the top side of the trolley 3 is heated to a high temperature by the heater 9, but the bottom side is kept at a relatively low temperature.
For this reason, the upper surface side of the truck 3 is extended and warped more than the lower surface side, and as a result, the wheels 13 in the middle
There were cases where the rails rose up from rails 2 and 2. This phenomenon occurs particularly in large furnaces in which the cart 3 is long. In order to prevent this, it would be possible to sufficiently increase the rigidity of the cart to suppress thermal deformation, but in that case, the cart would become heavy and costly, making it impractical. isn't it.

This idea was made in view of the above circumstances, and it not only makes it possible to automate operations, but also
The object of the present invention is to provide a cart-type furnace that can reduce thermal deformation of the cart.

``Means for solving the problem'' This idea involves laying rails along the length of the bottom of a horizontally placed cylindrical furnace vessel, and running a trolley with an electric heater attached to the top surface on the rails. A trolley type configured to be moved, and the workpiece is placed on the trolley and carried into the furnace container, whereby the workpiece is heated from below by the electric heater. In the furnace, the truck is divided into a plurality of units in the length direction of the furnace container and connected to each other, and the truck is attached to the bottom surface of each of the divided trucks and the bottom surface of the furnace container. The apparatus is characterized in that a pantograph power supply mechanism is provided that contacts each other and supplies power to the electric heater when placed in the container.

"Operation" In the cart-type furnace of this invention, when the cart is placed in the furnace container, the pantograph power supply mechanism automatically comes into contact with it, and it is possible to immediately supply power. Also,
Since the truck is divided into multiple units, the thermal deformation is limited to each truck and prevents it from warping significantly.

``Example'' An example of this invention will be described below in Figures 1 and 2.
This will be explained with reference to the figures. Fig. 1 is a side sectional view showing the schematic structure of the bogie type furnace of this embodiment, and Fig. 2 is an enlarged view of the main parts. , 3 and 4, and detailed explanation thereof will be omitted.

In the cart-type furnace of this embodiment, the cart 3 in the conventional cart-type furnace described above is replaced by three carts 2.
It is divided into 0, 20, and 20 parts, which are connected to each other. That is, each trolley 20
The length of the trolley is approximately 1/3 that of the conventional trolley 3, and the upper surface of the trolley is equipped with a heat insulating material 5, an electric heater 9, and a column 14 for supporting the object to be processed, as in the conventional trolley. each installed. and,
Each truck 20 has a connecting member 2, as shown in FIG.
1 is connected to each other by a pin 22 inserted in the horizontal direction so that vertical rotation is not restricted to each other. Note that the lid 7 of the heating chamber 6 is attached to the cart 20 located on the furnace lid 10 side.

Further, in this cart type furnace, power is supplied to the heater 9 provided on the upper surface of each cart 20 by a pantograph power feeding mechanism 23. That is, a pantograph 25 connected to the heater 9 by a cable 24 is attached to the lower surface of the truck 20, while a pantograph 25 is attached to the bottom of the truck 20.
When these carts 20 are placed in the furnace vessel 1 (the state shown in FIGS. 1 and 2),
A pantograph 26 is arranged at a position where it can come into contact with each pantograph show 25. Power is supplied to these pantographs 26 from a power supply facility (not shown) through a conductor 27 penetrating the furnace vessel 1 and a power cable 28 connected thereto.

In the cart-type furnace configured as described above, when the connected carts 20 are moved on the rails 2 and carried into the furnace vessel 1, the respective pantographs 25 and 26 naturally come into contact with each other; They are pressed together by the pressing force. Therefore, power can be supplied immediately after the trolley 20 is carried in, and operations can be automated without relying on the manual labor of workers as in the case of conventional trolley-type furnaces. Further, there is no need to secure a space for horizontally pulling the bus bar 15, a space for installing the electrode plates 17 and 18, and a work space for connecting them, unlike the conventional cart-type furnace.

In addition, since the three carts 20 are connected to each other,
Although each cart 20 undergoes some thermal deformation (warpage), the overall amount of deformation is greater than that of the conventional cart 3.
This is sufficiently smaller than in the case of . Therefore,
It is possible to prevent the wheels 13 at the intermediate portion from lifting up as would be the case when using the conventional truck 3. Further, when the above-described pantograph power supply mechanism 23 is applied to the conventional trolley 3, the middle part of the trolley 3 is thermally deformed and floats up, so that the pantograph 25 and the pantograph 26
However, in this cart-type furnace, there is no such fear and a stable power supply can be performed. Further, there is no need to increase the rigidity of the truck 20 against thermal deformation, and the weight of the truck 20 can be reduced.

In the above embodiment, three carts 20 are connected, but it goes without saying that the number of carts 20 may be set as appropriate in consideration of the length of the furnace vessel 1, etc. In addition, the pantograph power supply mechanism 23 in the above embodiment has a pantograph 25 attached to the trolley 20 side, and a pantograph 25 attached to the furnace vessel 1 side.
6 was installed, but this may be done in the opposite direction.

"Effects of the invention" As explained in detail above, according to this invention, power is supplied to the electric heater provided on the trolley by the pantograph power supply mechanism.
Power can be automatically supplied simply by transporting the trolley into the furnace vessel, making it possible to automate operations. In addition, since the truck is divided into multiple units and connected to each other, thermal deformation of each truck is suppressed and the truck is prevented from warping significantly.This makes it possible to ensure that the pantograph power supply mechanism is in contact with each other. can be done.

[Brief explanation of the drawing]

1 and 2 show a schematic structure of a cart-type furnace according to an embodiment of this invention, with FIG. 1 being a side sectional view and FIG. 2 being an enlarged side sectional view of the main parts. Figures 3 and 4 show conventional trolley type furnaces.
The figure is a side sectional view, and FIG. 4 is a front sectional view. DESCRIPTION OF SYMBOLS 1...Furnace container, 2...Rail, 9...Electric heater, 20...Dolly, 21...Connection member, 22...
Pin, 23... Pantograph power supply mechanism, 25...
Pantograph Show, 26...Pantograph.

Claims (1)

[Scope of utility model registration request] A rail is laid along the length of the bottom of a horizontally placed cylindrical furnace vessel, and a trolley with an electric heater attached to the top surface is moved on the rail. In a trolley-type furnace in which a workpiece is placed and carried into the furnace vessel and the workpiece is heated from below by the electric heater, the trolley extends in the length direction of the furnace vessel. The carriage is divided into a plurality of units and connected to each other, and the lower surface of each of the divided carriages and the bottom face of the furnace vessel are in contact with each other when the carriage is placed in the furnace vessel, and the electricity is generated. A bogie-type furnace characterized by being equipped with a pantograph power supply mechanism that supplies power to a heater.