JP2003156287A - Roller support device of roller hearth kiln - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roller support device wide in a working region and high in workability and safety without requiring tools at the time of connecting and disconnecting roller supporters as well as capable of exchanging a ceramic roller from both directions of the driving side and the driven side. SOLUTION: The roller support device used for the roller hearth kiln is constituted by supporting both ends of the ceramic roller through hollow shafts by a supporting driving side housing and a driven side housing respectively supporting them, passing end parts of the ceramic roller through each of these hollow shafts and mounting the cap type roller supporters on the hollow shaft free to remove.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller supporting device used for a roller hearth kiln.

[0002]

2. Description of the Related Art A roller hearth kiln is a tunnel-shaped firing furnace in which a large number of ceramic rollers penetrating the furnace walls on both sides are arranged in parallel and supported by a roller support, and the ceramic roller is rotated to remove the material to be fired. It is a kiln that fires while conveying in one direction. With the roller hearth kiln, a large amount of objects to be fired can be fired continuously and quickly.

Conventional roller supports are roughly classified into two types, a band fixing system and a bolt fixing system, each of which has its own characteristics. Also, both have advantages and disadvantages.

The band fixing method is shown in FIGS. 5 (a) and 5 (b).
As shown in (c) and FIG. 8, the roller support 1
And a hose band 3 is used to fix the ceramic roller 2. The roller support 1 is directly fixed to the ceramic roller drive shaft 4, and the ceramic roller 2 penetrating the inside of the furnace body 5 from the driven side is inserted into the roller support of the roller support 1, and the hose band 3 is used to support the roller support. And the ceramic roller 2 by tightening.

The advantage of the band fixing system is that the hose band 3 is used.
By tightening uniformly in all directions, the tightening pressure is stable.

The disadvantages of the band fixing system are as follows.

(1) When the hose band 3 is tightened, the force for tightening the ceramic roller 2 is rather weak.

(2) If the hose band 3 is used for a long period of time, the hose band 3 will be seized.

(3) Since the mounting position of the roller support 1 is between the drive side housing 6 and the casing of the furnace body 5, the work area is narrow, and workability and safety are poor.

Reference numeral 7 is a bearing, 8 is a sprocket, and 9 is a driven side housing.

The bolt fixing method is shown in FIGS. 6 (a) and 6 (b).
As shown in (c) and FIG. 7, a hexagon bolt 10 for fixing the roller support 1 and the ceramic roller 2 is provided.
It is characterized by using. The roller support 1 is directly fixed to the ceramic roller drive shaft 4, the ceramic roller 2 penetrating the inside of the furnace body 5 from the driven side is inserted into the roller receiving portion, and the ceramic roller is fixed with the pressing bolt 10 to fix the roller. .

The advantage of the bolt fixing method is that the ceramic roller 2 is tightened at three points with the pressing bolts 10,
That is, the ceramic roller 2 is excellent in tightening force.

The disadvantages of the bolt fixing method are as follows.

(1) Since the roller support 1 is constantly rotating, if the pressing bolt 10 is used for tightening, it must be tightened vertically to the ceramic roller 2. Therefore, it is difficult to tighten.

(2) Since the ceramic roller 2 is tightened at three points by the pressing bolt 10, the core of the ceramic roller 2 will be slightly deviated from the predetermined center of rotation unless the three points are evenly tightened.

(3) Since the roller support 1 is attached between the drive-side housing 6 and the casing of the furnace body 5, the work area is narrow and the workability and safety are poor.

[0017]

The drawbacks of the conventional ceramic roller support structure will be specifically described as follows.

1) The conventional ceramic roller support structure has a structure in which the roller support is fixed to the ceramic roller drive shaft with bolts or screws. Further, since the ceramic roller drive shaft and the housing plate are integrally formed, the ceramic roller replacement work must always be performed on the driven side. Therefore, when the ceramic roller is broken at the center of the roller hearth kiln, it is difficult to remove the driving side ceramic roller.

2) In the conventional ceramic roller supporting structure, when replacing the ceramic roller, the hose band or the roller fixing bolt is tightened or loosened by using a tool such as a screwdriver to detach the ceramic roller. If a part of the worker's body accidentally touched the ceramic roller and the roller support tool exposed to high temperature, there was a risk of getting burned. Further, since the roller support is provided between the housing and the furnace body, the work area is very narrow and it is difficult to perform the work.

3) In the conventional ceramic roller support structure, the ceramic roller is fixed by the roller support on the drive side, and thereby the rotation of the drive shaft is transmitted to the ceramic roller. Also, there is no roller support on the driven side, the ceramic roller is free,
It was received by bearings. Therefore, when the ceramic roller and the roller support were deformed due to heat or the like, the driven ceramic roller was lifted up or damaged due to contact with the driven housing.

4) In the conventional ceramic roller supporting structure, the roller supporting member is provided only on the driving side, so that the force for fixing the roller is weak, and the roller supporting member is loosened by the operation of the roller hearth kiln for a long time. Sometimes slipped out and the rollers stopped spinning.

[0022]

OBJECT OF THE INVENTION It is an object of the present invention to provide a roller support device in which replacement of a ceramic roller can be carried out from both the driving side and the driven side.

Another object of the present invention is to provide a roller supporting device which does not require tools for attaching and detaching the roller supporting device. .

Still another object of the present invention is to provide a roller supporting device having a wide working area and high workability and safety.

[0025]

The solution means of the present invention is exemplified as follows.

(1) In a roller supporting device used for a roller hearth kiln, a driving side housing and a driven side housing for supporting both ends of a ceramic roller are supported via hollow shafts, and each of the hollow shafts is provided with a ceramic roller. A roller supporting device, characterized in that a cap type roller supporting member is detachably attached to a hollow shaft by penetrating an end portion thereof.

(2) The roller supporting device described above, wherein the hollow shaft and the roller supporting member are detachably mounted by a combination of a lock pin and a hook.

(3) The roller supporting device described above, wherein the roller supporting member is arranged outside the driving side housing and the driven side housing.

(4) A structure in which a compression spring (preferably a compression coil spring) is provided in the roller support, and the compression spring applies outward pressure in the axial direction of the ceramic roller to the roller support. The above-mentioned roller device characterized.

[0030]

According to one embodiment of the present invention, in a roller support device used in a roller hearth kiln, the ceramic roller drive shaft and the driven side support shaft are configured as hollow shafts. The hollow shafts are attached to the drive shaft and the driven side housing. And
The ceramic roller is passed through the hollow shaft and fixed with a roller support.

Preferably, the hook provided on the roller support is fixed in such a manner that it is hooked on the lock pin provided on the hollow shaft. According to this structure, tools and the like are not required when the roller support is attached and detached, so that the ceramic roller can be replaced easily and quickly. Preferably, in this structure, if the roller support is provided on the outside of the housing (in the direction opposite to the furnace wall with respect to the housing), the roller support is prevented from being burned, and there is a great concern about burns or the like when replacing the ceramic roller. Decrease.

Further, if the roller support is pressured by the compression coil spring in the roller support,
The driving rotation is also smoothly transmitted to the ceramic roller.

According to another embodiment of the present invention, the ceramic roller drive shaft and the driven side support shaft are hollow shafts, and the ceramic rollers are pierced through the hollow shafts and fixed by a support tool. Therefore, if the roller breaks for some reason, the ceramic roller can be replaced from either the driving side or the driven side.

Further, it is preferable that the roller support of the roller hearth kiln be fixed in such a manner that it is hooked on a protrusion such as a (rod pin) at the tip of the hollow shaft.
At that time, attach a compression spring inside the roller support,
It is preferable that the compression spring presses the support tool against the ceramic roller via the roller pressing fitting. Due to the frictional force, the driving force transmitted from the hollow shaft to the roller support is transmitted to the ceramic roller. Further, according to this structure, tools are not required when replacing the ceramic roller. therefore,
Exchange work can be done easily and quickly.

The roller support of the roller hearth kiln is preferably provided outside the housing (opposite the surface of the furnace body with respect to the housing). Then, the roller support of the roller hearth kiln separates from the surface of the furnace body which becomes hot. As a result, it is possible to eliminate the burning of the roller support and to significantly reduce the risk of burns or the like that may occur when replacing the ceramic roller.

By providing the roller supports on both sides (driving side and driven side) of the furnace and fixing them together, the lifting of the ceramic roller can be suppressed.

In the roller support device of the roller hearth kiln, both supporting shafts for supporting the driving side and the driven side of the roller are hollow shafts, and the ceramic rollers are penetrated into the supporting shafts so that the roller supporting members at both ends thereof are provided. It is preferable to adopt a one-touch type detachable structure.

When the compression means (for example, a compression coil spring) is attached inside the roller support and the roller support is attached to the hollow shaft, when the ceramic holder is fixed by pressing the roller support fitting inside the roller support. , The ceramic roller will be fixed securely.

The compression spring inside the roller support may show a moderate repulsive force against the force to be pressed.
For this reason, when the roller support is attached to both ends of the ceramic roller in such a shape that the ceramic roller is pressed with equal force from both ends, it is possible to maintain a uniform force. Therefore, the driving force transmitted from the driving-side hollow shaft is efficiently transmitted to the ceramic roller via the roller support tool. Therefore, highly stable support and good rotation are possible, and stable conveyance of the product to be baked can be easily realized.

Also, by attaching the roller support to both ends of the ceramic roller so that the ceramic support can be attached in a one-touch manner, the roller support can be easily attached and detached, and tools are not required for the attachment and detachment work.

[0041]

Embodiments of the present invention will be described below with reference to the drawings.

In the roller support device of the roller hearth kiln shown in FIG. 1, a large number of ceramic rollers 11 are arranged in parallel along a predetermined horizontal plane, and both ends of each of the ceramic rollers 11 are a drive side support shaft 13 and a driven side support shaft 12. Is supported by both. These are configured as hollow shafts 12, 13. The end of the ceramic roller 11 is penetrated into the hollow shafts 12 and 13, and the cap type roller supports 14 and 15 are inserted into the hollow shafts 12 and 1.
Insert in 3 and rotate to attach.

Cap type roller supports 14 and 15
It is preferable that one end of the circular pipe is open and the other end is closed to form a bottom.

The hollow shaft 12 and the roller support are
The lock pin 17 and the hook 16 are combined to be detachably attached.

In the example shown in FIG. 3, a lock pin 17 is formed on the outer peripheral portion of one end of the hollow shaft 12, and a hook 16 is formed on the open portion of the roller support tools 14, 15. These relationships may be reversed. If the hollow shaft 12 has the same shape as the hollow shaft 13,
It is preferable because either the driving side can be set.

The roller hearth kiln shown in FIG. 2 has a furnace wall 20a, 20 on both sides of a tunnel-shaped firing furnace 20.
A large number of ceramic rollers 11 are arranged side by side through b, and the objects to be fired are conveyed in one direction by the rotation of the rollers 11 and fired.

Both ends of each ceramic roller 11 are supported by a driving side housing 21 and a driven side housing 22 via a ceramic roller driving side supporting shaft and a driven side supporting shaft. The ceramic rollers 11 are penetrated into the hollow shafts 12 and 13 to form roller support members 14 and 15.
Fix at. At that time, the hooks 16 of the roller supports 14 and 15 are fixed in such a manner that they are hooked on the lock pins 17 of the hollow shaft 12. Since the locking is performed by the combination of the hook 16 and the lock pin 17, the roller supports 14, 15
No tools, etc., are required when attaching and detaching.

The roller supports 14 and 15 are provided on both sides outside the housings 21 and 22 (in the direction opposite to the furnace walls 20a and 20b with respect to the housings 21 and 22). As a result, burning of the roller support tools 14 and 15 is eliminated, and it becomes easier to avoid burns or the like when replacing the ceramic roller 11.

Further, pressure is applied to the roller supports 14 and 15 by the compression coil spring 24 in the roller supports 14 and 15 shown in FIG. As a result, the driving rotation is smoothly transmitted to the ceramic roller 11.

The ceramic roller 11 is attached to each of the hollow shafts 12 and 13 on the driving side and the driven side of the ceramic roller.
Is pierced through and fixed with the roller supports 14 and 15.
Then, when the ceramic roller 11 is broken due to some cause, the ceramic roller 11 can be replaced from either the driving side or the driven side.

The roller supports 14 and 15 are cap-shaped as described above, and are hooked on the protrusion (rod pin 17) at the tip of the hollow shaft 12. that time,
When the roller pressing fitting 27 is pressed against the ceramic roller 11 by the compression coil spring 24 mounted inside the roller support tools 14 and 15, the friction force causes the hollow shaft 12 to move to the roller support tools 14 and 15. The driving force transmitted is surely transmitted to the ceramic roller 11.

Since the roller supports 14 and 15 are provided and fixed on both sides thereof (driving side and driven side),
The rise of the ceramic roller is suppressed.

The supporting shafts on both sides for respectively supporting the driving side and the driven side of the ceramic roller 11 are hollow shafts 12,
13, the end portion of the ceramic roller 11 is penetrated through the inside thereof, and the roller support tools 14 and 15 at both ends thereof are attached in a one-touch type.
When the compression coil springs 24 are attached to the insides of the rollers 4 and 15, when the roller supports 14 and 15 are attached to the hollow shaft 12, the ceramic roller 11 is pressed by the roller pressing fittings 27 inside the roller supports 14 and 15. The ceramic roller 11 can be fixed. The compression coil spring 24 shows an appropriate repulsive force against the force to be pressed. Therefore, the roller support 1
When 4 and 15 are attached to both ends of the ceramic roller 11 so as to be pressed, the ceramic roller 11 is pressed with equal force from both ends, and uniform force can be maintained. Therefore, the driving force transmitted from the hollow shaft 12 on the driving side is applied to the roller supporter 14,
It is efficiently transmitted to the ceramic roller 11 via 15. As a result, highly stable support and good rotation are possible, and stable conveyance of the product to be fired can be realized.

If the roller supports 14, 15 are attached to both ends of the ceramic roller 11 in the one-touch type as described above, the roller supports 14, 15 can be easily attached and detached, and tools are required for the attachment and detachment work. And not to.

1 to 4, 29 is a sprocket, 30 is a coil spring bolt, 31 is a sprocket, 32 is a bearing, 34 is a rotational power source such as a motor, and 35 is rotational power transmission means such as a chain or a belt. Show.

In FIG. 3 (a), the lock pin 17 of the hollow shaft 12 on the housing side and the hook 16 of the roller support 14 on the opposite side are aligned, and then in the direction of the arrow (see FIG. 3). Press the roller support tool 14 in the right direction).

In FIG. 3 (b), the lock pin 17 is inserted all the way into the hook 17, and after confirming that, the roller support 14 is twisted and fixed.

FIG. 3 (c) shows a state in which the roller support tool 14 is twisted and fixed in this way to be completely fixed.

[0059]

INDUSTRIAL APPLICABILITY The present invention is a roller supporting device which exerts a remarkable effect on various roller hearth kilns.
For example, when the ceramic roller is broken in the furnace for some reason during firing, not only the ceramic roller remaining on the passive side can be removed, but also the ceramic roller remaining on the driving side can be removed.

Further, according to the roller supporting apparatus of the present invention, since the working area is widened, the replacement work can be easily carried out even if the tools are used in a place near the surface of the furnace body where the temperature becomes high. Furthermore, the roller support can be attached and detached without tools. Therefore, the risk of burns due to high heat is reduced.

If the roller support is installed outside the housing, it is possible to prevent injuries such as burns that may occur during work. In addition, it becomes easy to avoid burning the roller support tool due to heat.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a main part of a roller supporting device according to one of the preferred embodiments of the present invention.

FIG. 2 is an explanatory view showing a mounted state of the roller support tool shown in FIG.

3 (a), (b) and (c) show a procedure for mounting the roller support shown in FIG.

4 shows the internal structure of the roller support shown in FIG.

5 (a), (b) and (c) show a state in which a conventional roller support is attached.

6 (a), (b) and (c) show a state in which another conventional roller support is attached.

FIG. 7 shows a state in which a roller is fixed by the conventional roller support shown in FIG.

FIG. 8 shows a state in which a roller is fixed by the conventional roller supporting tool shown in FIG.

[Explanation of symbols]

11 Ceramic roller 12, 13 Hollow shaft 14, 15 Roller support 16 hooks 17 Lock Pin 20 firing furnace 20a, 20b Furnace wall 21, 22 housing 24 coil spring 27 Roller holder

Claims (4)

[Claims] 1. A roller supporting device for use in a roller hearth kiln, wherein a driving side housing and a driven side housing respectively supporting both ends of a ceramic roller are supported through hollow shafts, and the ends of the ceramic rollers are respectively supported by the hollow shafts. A roller support device having a structure in which a cap type roller support is detachably attached to a hollow shaft by penetrating a portion. 2. The roller supporting device according to claim 1, wherein the hollow shaft and the roller supporting member are detachably mounted by a combination of a lock pin and a hook. 3. The roller supporting device according to claim 1, wherein the roller supporting member is arranged outside the driving side housing and the driven side housing. 4. A compression spring is provided in the roller support,
The roller device according to any one of claims 1 to 3, wherein a compression coil spring applies a pressure outward in the axial direction of the ceramic roller to the roller support.