JPH076689U - Roller Hearth Kiln Roller Drive - Google Patents

Abstract

(57) [Summary] [Purpose] To smoothly rotate the rollers so that the distance between the front and rear of the objects to be fired can be reduced. [Structure] A roller hearth kiln roller driving device in which a plurality of intermediate shafts 4 are supported outside the furnace 2 so as to correspond to the rollers 3, and the intermediate shafts 4 and the rollers 3 are connected to each other. A line shaft 11 is supported on the outside and is long in the roller conveying direction (direction of arrow A), and the line shaft 11 and the intermediate shafts 4 are arranged so that the rotational force of the line shaft 11 is transmitted to the intermediate shafts 4. Worn gear 12,
A plurality of sets 13 and a motor 14 for forcibly driving the line shaft 11 should be provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a roller driving device for driving a roller arranged in a roller hearth kiln for firing tiles and the like.

[0002]

[Prior art]

 Conventionally, as shown in FIGS. 3 and 4, the roller driving device 1 of the roller hearth kiln includes a plurality of intermediate shafts 4 that are supported outside the furnace 2 so as to correspond to the respective rollers 3, and A split pin 5 that connects the intermediate shaft 4 and the roller 3, an endless chain 7 that meshes with a chain sprocket 6 attached to the shaft end of each intermediate shaft 4, and a motor that drives the endless chain 7 forcibly (not shown). ) And. In the roller driving device 1 of the roller hearth kiln, when the endless chain 7 is forcibly driven by the chain sprockets 8 attached to the output shafts of the motors, the respective intermediate shafts 4 are rotationally driven through the chain sprockets 6, and the respective intermediate shafts are driven. The rotational force of 4 is transmitted to the rollers 3 via the split pins 5 to rotate each roller 3.

[0003]

[Problems to be solved by the device]

 However, in the very long endless chain 7, since the outside of the furnace 2 becomes a very high temperature atmosphere, the endless chain 7 extends with the lapse of use time and the chain pitch becomes long. Then, in the endless chain 7, the meshing with each chain sprocket 6 is not smoothly performed, and the rotation of the roller 3 is not constant. As a result, the rollers 3 rotate so as not to rotate smoothly and to pulsate, and the fired objects such as tiles being conveyed may collide with each other.

In the conventional roller drive device 1 of the roller hearth kiln, it is necessary to considerably increase the front-rear distance so that the objects to be fired do not collide with each other, and it is not possible to increase the amount of firing per hour. I got it.

In order to solve the above problems, the present invention aims to provide a roller driving device of a roller hearth kiln capable of smoothly rotating a roller so that a front-to-back distance between objects to be fired can be reduced. And

[0006]

[Means for Solving the Problems]

 The means adopted by the present invention is a roller drive device of a roller hearth kiln that supports a plurality of intermediate shafts so as to correspond to each roller outside the furnace, and connects each intermediate shaft and the roller to the outside of the furnace. A line shaft that is axially supported and long in the transport direction, and a plurality of sets of gears attached to the line shaft and the intermediate shafts so that the rotational force of the line shafts is transmitted to the intermediate shafts. A roller drive device for a roller hearth kiln, which is equipped with a motor for forcibly driving the shaft.

[0007]

[Action]

 When the line shaft is forcibly driven by a motor, it drives the intermediate shaft to rotate via a gear. The gears smoothly mesh with each other even when the temperature of the atmosphere is high, so that the intermediate shaft can be smoothly rotated. The respective rollers smoothly rotate without pulsation by the smooth rotation drive of the intermediate shaft, and smoothly convey the material to be fired.

[0008]

【Example】

 Hereinafter, a roller driving device of a roller hearth kiln according to the present invention (hereinafter, referred to as a “roller driving device of the present invention”) will be described based on an embodiment shown in the drawings. FIG. 1 is a side view showing an embodiment of the roller driving device of the present invention, and FIG. 2 is a partially sectional front view of the same embodiment.

The improvement of the roller drive device of the present invention of this embodiment is that a line shaft 11 is supported on the outside of the furnace 2 and is long in the roller conveying direction (direction of arrow A), and the rotational force of the line shaft 11 is increased. In order to transmit each of the intermediate shafts 4, the line shaft 11 and a plurality of sets of gears 12 and 13 attached to each intermediate shaft 4 and a motor 14 for forcibly driving the line shaft 11 are provided. is there. The roller drive device of the present invention includes a plurality of intermediate shafts 4 supported on the outer side of the furnace 2 so as to correspond to the rollers 3, and the intermediate shafts 4 connected to the intermediate shafts 4 and the rollers 3. The attached chuck 5 is provided. The chuck 5 is composed of a push cup 5a for pushing the end portion of the roller 3 and a spring 5b for pushing the push cup 5a. The pressing cup 5a has a pressing surface made of rubber or the like to increase friction.

A line shaft 11 and each of the intermediate shafts 4 are axially supported in a staggered manner on a plastic socket 15 attached to the outer wall surface 2 a of the furnace 2 at a proper position. As the gears 12 and 13, screw gears or the like are used.

The chain shaft 11 has a chain sprocket 16 attached at an appropriate position. An endless chain 19 is stretched between the chain sprocket 16 and a chain sprocket 18 attached to the output shaft of a drive motor 17 with a speed reducer. Although not shown, the line shaft 11 may be rotatably connected to a drive motor 17 with a speed reducer via a gear train.

Although not shown in the figure, the furnace 2 is divided into a plurality of sections from the pre-tropical zone at the inlet to the cooling zone at the outlet, and the line shaft 11 is arranged in each section. In each section, the drive motors 17 may be individually arranged to drive the line shaft 11 in a sectional manner, and the drive motors 17 may be accurately rotationally controlled by digital inverter control or the like.

When the line shaft 11 is forcibly driven by the motor 14, the intermediate shaft 4 is rotationally driven via the gears 12 and 13. The gears 12 and 13 smoothly mesh with each other even when the temperature of the atmosphere is high, so that the intermediate shaft 4 is smoothly rotated. The rollers 3 smoothly rotate without pulsation by the smooth rotation drive of the intermediate shaft 4, and smoothly convey the material to be fired (not shown).

[0014]

[Effect of device]

 As described above in detail, since the roller drive device of the present invention can smoothly rotate the rollers without pulsating, the front-rear space between the objects to be fired can be reduced. As a result, the roller drive device of the present invention has a practical effect of being able to improve the firing amount of the roller hearth kiln per hour.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a roller driving device of the present invention.

FIG. 2 is a partially sectional front view showing the embodiment.

FIG. 3 is a front sectional view showing a conventional roller driving device.

FIG. 4 is a side view showing a conventional roller driving device.

[Explanation of symbols]

 2 ... Furnace 3 ... Roller 4 ... Intermediate shaft 11 ... Line shaft 12, 13 ... Gear 14 ... Motor

Claims (1)

[Scope of utility model registration request] 1. A roller drive device of a roller hearth kiln in which a plurality of intermediate shafts are pivotally supported outside the furnace so as to correspond to the rollers, and the intermediate shafts and rollers are connected to each other outside the furnace. And a plurality of sets of gears attached to the line shafts and the intermediate shafts so that the rotational force of the line shafts long in the roller conveyance direction is transmitted to the intermediate shafts, and the line shafts are forced. A roller drive device for a roller hearth kiln, which is equipped with a motor for driving.