JPS645235B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a roller conveyor for a kiln, and more particularly, when repairing a roller conveyor in a kiln, the roller members constituting the conveyor can be easily and quickly replaced. The present invention relates to a roller conveyor for a kiln.

Some kilns, such as tunnel furnaces, in which the object to be fired is fired while being conveyed within the furnace, use a roller conveyor as a means for conveying the object to be fired. This is achieved by, for example, as shown in FIG. 1, a large number of roller members 10 made of heat-resistant tubes such as ceramic or heat-resistant alloy pipes are arranged so as to be rotatable between the facing walls 12, 12 of the kiln. A roller conveyor is installed inside the kiln.

Incidentally, in kiln furnaces equipped with this type of roller conveyor, accidents inevitably occur during furnace operation in which the roller members become worn out or damaged, rendering them unusable. It must be removed and cleaned periodically to remove debris. In this case, it is desirable to replace the roller members quickly so as not to disrupt operations as much as possible, but in conventional roller conveyors for kilns, each roller member has a bearing that supports it and a power transmission mechanism. Since it is complicatedly attached to the sprocket etc., it is not possible to easily and quickly attach and detach it and replace it. For this reason, the current situation is that the furnace operation must be stopped for a long time when the roller members are repaired and replaced, resulting in a large time loss.

The present invention has been devised in view of the current situation, and when it becomes necessary to repair or replace each roller member constituting a roller conveyor for a kiln, it is possible to simplify the work of attaching and detaching the roller member. The purpose is to minimize the time loss due to furnace operation shutdown by configuring the system so that it can be completed quickly.

In order to achieve this object, a roller conveyor for a kiln according to the present invention is a roller conveyor for a kiln in which a large number of roller members made of a heat-resistant material are rotatably arranged between the walls of a kiln. A rotating shaft connected to a drive source is pivotally supported outside the furnace wall via bearings concentrically with each of the roller members, and has a tapered tip, a slot in the longitudinal direction, and an outer periphery. The rear end of the connecting tube, which has an engaging protrusion formed on its surface, is fixed to either the rotating shaft or the roller member, and the distal end of the connecting tube is fixed to the hollow cylindrical portion formed at the other end. The roller member can be freely attached to and detached from the rotating shaft by elastically expanding the roller member and inserting the roller member in a direction, and fitting the engagement protrusion into a locking hole formed in the hollow cylindrical part by elastic expansion of the tip part. It is characterized by being fixedly supported.

Next, the roller conveyor for a kiln according to the present invention will be described in detail below with reference to the accompanying drawings, citing preferred embodiments. As previously explained in connection with FIG. 1, in a roller conveyor for a kiln, a hollow tubular roller member 10 made of a heat-resistant material such as ceramic is moved between opposing walls 12 of the kiln. A plurality of holes are rotatably arranged through the holes at predetermined intervals. That is, a roller conveyor consisting of a large number of roller members 10 is disposed in the furnace, and the object to be fired is carried on the roller conveyor and conveyed through the furnace by rotation of the roller members. The gist of the present invention is a structure in which the roller member can be easily attached and detached, so to explain this, first, a bracket 14 is attached to the outside of one furnace wall 12 by assembling angle members in a triangular shape and serving as a support. , an elongated box 16 with a rectangular cross section is disposed parallel to the furnace wall 12 and supported by the bracket 14, and the elongated box 16 is arranged at intervals corresponding to the arrangement spacing of the roller members 10. The bearings 18 are arranged in such a manner. A rotating shaft 20 is inserted through the bearing 18 and rotatably supported so as to be concentric with each roller member 10. As shown in FIG. 2, the rotating shaft 20 has an enlarged diameter at the end facing the roller member 10, and a hollow cylindrical portion 22 is formed in this enlarged portion.
The other end protrudes outward from the elongated box body 16 to fix a chain wheel 24, and a roller chain 26 connected to an external drive source (not shown) is engaged with the chain wheel 24, so that each rotation axis 20
Rotation drive is performed. As can be clearly seen from FIG.
6 is assigned to drive every other rotating shaft 20.

Next, in the present invention, the roller member 10 is detachably fixedly supported on the rotating shaft via a connecting pipe 28 as shown in FIG. That is, the connecting pipe 28 is made of a tubular body, and the distal end of the tubular body is tapered 30, and a slot 32 is formed extending a predetermined distance in the longitudinal direction from the open distal end.
By forming this slot 32,
As will be described later, when the connecting tube 28 is inserted into the hollow cylindrical portion 22 such as the rotating shaft, the leading end of the connecting tube can be elastically contracted in the radial direction, allowing smooth fixation of both members.

Furthermore, an engagement protrusion 34 that slightly protrudes in the radial direction is formed on the outer periphery of the connecting pipe 28 . As is clear from FIGS. 2 and 4, it is optimal to form two engaging protrusions 34 facing each other, but one
One or three or more may be formed. Note that the through hole indicated by reference numeral 36 in FIG.
This is for inserting a pin when connecting and fixing the connecting pipe 28 to the rotating shaft 20 or the roller member 10 as shown in FIGS. 2 and 3 (described later).

In the case of the embodiment shown in FIG. 2, the connecting pipe 28 configured as described above is inserted and fixed into the hollow cylindrical portion 22 of the rotating shaft 20. That is, the rear end of the base of the connecting pipe 28 is inserted into the hollow cylindrical part 22 bored in the enlarged diameter part of the rotating shaft 20, and the through hole 38 previously bored in the enlarged diameter part is inserted into the through hole of the connecting pipe 28. 36
After matching, the spring pin 40 is driven in to fix the connecting pipe 28 concentrically to the rotating shaft 20.

Next, a description will be given of means for connecting and fixing the roller member 10 to the connecting pipe 28 which is fixed concentrically to the rotating shaft 20 in this manner. As shown in FIG. 2, a sleeve consisting of a cylindrical small-diameter stepped portion having an outer diameter approximately equal to the inner diameter of the roller member 10 and a cylindrical large-diameter stepped portion having an outer diameter approximately equal to the outer diameter of the roller member 10. 42 is prepared, and the small diameter stepped portion of this sleeve 42 is
It is inserted into the open end of the roller member 10 that protrudes outward from the furnace wall 12 through its through hole 44 and fixed with a spring pin 46 .

Further, a locking hole 50 is also provided in a protruding manner in the hollow cylindrical portion 48 formed in the large-diameter stepped portion of the sleeve 42 . Since the locking holes 50 are for the engagement protrusions 34 to fit into when the distal end of the connecting pipe 28 is inserted into the hollow cylindrical portion 48, the number of the engagement holes 50 corresponds to the number of engagement protrusions 34. It is necessary to drill it.

In the present invention configured in this manner, the procedure for connecting and fixing the roller member 10 to the rotating shaft 20 will be described. A connecting pipe 28 is concentrically fixed to the tip of the rotating shaft 20, and the tapered end of the connecting pipe 28 is fixed concentrically to the tip of the rotating shaft 20. are oriented correspondingly to the through holes 44 of the furnace wall 12, respectively. Therefore, if the roller member 10 with the sleeve 42 fixed to one end is inserted in the axial direction from the opposite side of the furnace wall 12 toward the through hole 44, the tip of the connecting pipe 28 will be inserted into the opening of the sleeve 42. The engagement protrusion 34 will come into contact with the end of the sleeve 42 . Here, further roller member 1
0 forcibly in the axial direction, the connecting pipe 28
is elastically contracted in the radial direction in the presence of the slot 32 to reduce the pipe diameter, and connect the connecting pipe 2 to the hollow cylindrical part 48.
8 is allowed to enter. Next, the engaging protrusion 34 formed on the connecting tube 28 falls into the locking hole 50 formed in the sleeve 42, and the tube diameter expands due to elastic expansion of the tip of the connecting tube 28, causing the engaging protrusion 34 to engage. Stop hole 50
By securely fitting the roller member 10 to the rotating shaft 20, the roller member 10 is fixedly supported. Conversely, when removing the roller member 10, if you forcibly pull the roller member 10 in the opposite direction from when it was installed, the connecting pipe 2
8 elastically contracts toward the slot 32, and the engagement protrusion 34 disengages from the locking hole 50.
The roller member 10 is easily removed from the rotating shaft 20.

Although FIG. 2 shows an example in which a sleeve 42 is used as the connection structure for the roller member 10, instead of using the sleeve 42,
The connecting pipe 2 is directly connected to the hollow cylindrical portion of the roller member 10.
Of course, the tip of No. 8 may be inserted and fixed. At this time, a locking hole is correspondingly formed in the hollow cylindrical portion of the roller member 10 to accommodate the engagement protrusion 34 therein.
In addition, although the rotating shaft 20 is selected in FIG. 2 as the object to which the connecting pipe 28 is fixed concentrically, the connecting pipe 28 is inserted and fixed into the hollow cylindrical portion of the sleeve 42 or the roller member 10, and this connection The tip of the tube 28 may be inserted into the hollow cylindrical portion of the rotating shaft 20 and fixedly supported. At this time, the engaging protrusion 34 is also attached to the hollow cylindrical portion of the rotating shaft 20.
A locking hole for fitting and accommodating the locking hole is correspondingly drilled.

Since the purpose of the present invention is to easily and quickly replace the roller member 10, it is sufficient to configure only the driving end of the roller member 10 as shown in FIG. achieved. It is sufficient if the driven side end of the roller member 10 is supported by a suitable bearing, but the first
As shown in FIG. 4, the roller member 10
It is more preferable that the driven end of the rotary shaft is also detachably fixed to the rotating shaft. That is, as shown in FIG. 1, a long box 54 is disposed and supported on the outside of the other furnace wall 12 via a bracket 52.
4, through holes 56, 56 are bored as shown in FIG. The roller member 1 is inserted into the through holes 56, 56.
A tube body 58 having an outer diameter approximately equal to the outer diameter of the tube body 58 is rotatably inserted through the tube body 58, and a ring 60 is fitted around the end of the tube body 58, and a pin 6 protrudes from the ring in the radial direction.
2 is screwed on, and a stopper 64 is fixed to the outside of the long box body 54 so as to be located on the rotation locus of the pin 62. Furthermore, bearings 66, 6 are provided inside the tube body 58.
6 are fixed at a predetermined distance apart, and the bearings 66,
66, the same rotating shaft 68 as explained in FIG. 2 is rotatably supported. This rotating shaft 68 and the roller member 1
The structure for fixing 0 is exactly the same as the structure shown in FIG. 2, so its explanation will be omitted.

According to the present invention, in the event that a roller member is damaged during operation of a kiln, the roller member can be removed from the rotating shaft by grasping the driven end of the roller member and pulling it in the axial direction. It can be easily pulled out, and then simply by inserting a new roller member into the furnace through the furnace wall through-hole and applying strong pressure forward, it will be securely fixed and supported on the rotating shaft via the connecting pipe. , it is possible to quickly repair and replace the roller member. Therefore, the shutdown of the furnace operation can be kept to a minimum, and time loss can be eliminated, and many other beneficial effects can be achieved.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway schematic perspective view showing the overall structure of a roller conveyor for a kiln according to the present invention, and FIG. 2 is a longitudinal cross-sectional view showing the connected and fixed state of the drive side end of the roller conveyor for a kiln according to the present invention. FIG. 3 is a perspective view of a connecting pipe used in the present invention, and FIG. 4 is a longitudinal cross-sectional view showing the connected and fixed state of the driven side end of the roller conveyor for a kiln according to the present invention. 10...roller member, 12...furnace wall, 14...
Bracket, 16... Long box body, 18... Bearing,
20...Rotating shaft, 22...Hollow cylindrical portion, 24...
Chain wheel, 26...Roller chain, 28...
...Connecting pipe, 30...Taper, 32...Slotted,
34...Engagement protrusion, 36...Through hole, 38...Through hole, 40...Spring pin, 42...Sleeve, 44...Through hole, 46...Spring pin,
48...Hollow cylindrical portion, 50...Locking hole, 52...
Bracket, 54... Long box, 56... Through hole, 58... Tube, 60... Ring, 62... Pin, 64... Stopper, 66... Bearing, 68...
Axis of rotation.

Claims (1)

[Claims] 1. In a roller conveyor for a kiln, in which a large number of roller members made of a heat-resistant material are rotatably disposed between the walls of a kiln, a rotating shaft connected to a rotational drive source is mounted on a bearing outside the wall of the kiln. The rear end of the connecting pipe is pivoted concentrically with each of the roller members through the connecting pipe, has a tapered tip, a slot in the longitudinal direction, and an engaging protrusion on the outer circumferential surface, and rotates the rear end of the connecting pipe. The tip of the connecting pipe is elastically contracted in the radial direction and inserted into a hollow cylindrical part fixed to either the shaft or the roller member and formed at the other end, and the hollow cylindrical part is bored. A roller conveyor for a kiln, characterized in that the roller member is detachably fixedly supported on the rotating shaft by fitting the engaging protrusion into the locking hole by elastic expansion of the tip end.