JPH0216237Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is a roller hearth kiln in which a large number of rollers for transferring fired products are arranged in parallel in the furnace body of a tunnel furnace. This relates to a roller installation jig for a roller hearth kiln, which is used when replacing a furnace or installing a roller when installing a new furnace.

(Prior art) When installing a new roller hearth kiln or when a roller is damaged during operation, it is necessary to install a new roller by penetrating the furnace body. If the width of the roller is wide, and therefore the length and weight of the roller are large, the tip of the roller inserted from one side of the furnace body must be accurately inserted into the through hole made in the side wall of the opposite side of the furnace body. It is difficult to install the rollers, and it takes a lot of manpower and work time to install the rollers.

(Purpose of the invention) The present invention solves these conventional problems and provides a tool for installing rollers in roller hearth kilns, which makes it easy to install rollers even in roller hearth kilns with wide furnace bodies. It was completed as a tool.

(Structure of the invention) The present invention includes a gate-shaped carriage that slides in the longitudinal direction on a bearing case extending along both sides of a furnace body, and rollers of the bearing case are inserted into both side walls of the carriage. A notch corresponding to the hole is made transparent, and a fixed ring that supports the lower surface of the roller to be attached and a movable ring that presses the roller toward the fixed ring are provided on the inner side wall of the cart. In addition, a fixed ring and a movable ring are provided on the outer side wall to support the outer end portion of the roller.
The illustrated embodiment will be described in detail below.

1 is a furnace body of a roller hearth kiln; 2 is a through hole for roller insertion provided in both side walls of the furnace body 1;
3 is a roller that is about to be attached to the furnace body 1 by passing through the through holes 2, 2; 4 is a bearing case for supporting the roller extending along both sides of the furnace body 1 over its entire length; The bearing case 4 supports both ends of the rollers 3 and has a built-in roller drive mechanism that rotates all the rollers 3 in the same direction. The roller mounting jig of the present invention is used by being installed on the bearing case 4, and as shown in FIGS. A gate-shaped truck 7 is provided with wheels 6 that roll on the lower surface of the bearing case 4 and is slidably constructed on the bearing case 4 in the longitudinal direction thereof. Notches 10, 10 having substantially the same diameter as the roller insertion hole 9 of the bearing case 4 are provided in both side walls 8, 8 of the truck 7 in correspondence with the roller insertion hole 9 of the bearing case 4. Further, on the inner side of the side walls 8, 8 of the cart 7, that is, on the side wall 8 on the furnace body 1 side, a fixed ring 11 is provided with a bracket 12 at a position below the notch 10 for supporting the lower surface of the roller 3 to be attached. In addition, at a position above the notch 10, there is a movable wheel 13 that presses the roller 3 toward the fixed wheel 11.
is provided with a bracket 14. The shaft 15 of the movable ring 13 is fitted into a vertical groove 16 provided in the bracket 14 so as to be able to slide vertically, and a spring 17 provided above the vertical groove 16 is inserted into the vertical groove 16.
is constantly pushed downward by the elastic force of Further, a fixed ring 18 and a movable ring 19 that support the outer end portion of the roller 3 are also provided on the outer side wall 8 of the truck 7. In this embodiment, a fixed ring 18 is provided above the notch 10 of the outer side wall 8, and the notch 10 is provided with a fixed ring 18.
Although the movable ring 19 in which the shaft 20 is pressed upward by the spring 21 is provided at the lower position of 0, the fixed ring 18 and the movable ring 19 can also be installed upside down.
In addition, these fixed wheels 11, 18 and movable wheels 13,
Preferably, each of the rollers 19 has a diameter that is 1 to 2 times the outer diameter of the roller 3, and the contact surface with the roller 3 is provided with a V-groove and lined with hard rubber or the like. Damage shall be prevented.

With this structure, when replacing a plurality of continuous rollers 3 over a predetermined section, the old rollers 3 are removed in advance and the gate-shaped cart 7 is mounted on the bearing case 4. In this case, the lower wheels 6 may be removed, and the wheels 6 may be attached after the cart 7 is set in the bearing case 4. Then, by sliding the cart 7 in the longitudinal direction, cutouts 10, 10 are made transparently in both side walls 8, 8 of the cart 7.
The carriage 7 is fixed at a position corresponding to the roller insertion hole 9 of the bearing case 4 by a locking mechanism (not shown). Next, if the roller 3 to be attached from the outside of the truck 7 is inserted into the notches 10, 10, the first
As shown in the figure and FIG. 3, the roller 3 is held between the fixed ring 11 and the movable ring 13 provided on the side wall 8 on the inner side of the cart 7, that is, on the furnace body 1 side, and It is inserted into the furnace body 1 while being clamped on the outside by a fixed ring 18 and a movable ring 19 provided on the outer side wall 8 of the roller 7, and these fixed rings 11 and 19 prevent the roller 3 from being inserted. While guiding the roller 3 in the correct direction and preventing the roller 3 from wobbling, the movable wheels 13 and 18 move the roller 3 to the fixed wheel 1.
1 and 18, the tip of the roller 3 correctly moves through the furnace body 1 without wobbling or misaligning, and enters the through hole 2 for roller insertion provided in the opposite side wall 8. Since the roller 3 is inserted through the tube, the number of man-hours required for installing the roller 3 can be significantly reduced compared to the conventional method, and the period during which the furnace is out of operation can be shortened. The above explanation has been made regarding the case of replacing a plurality of consecutive rollers 3 in an existing furnace, but the jig of the present invention can also be used in the same way when installing new rollers 3 in a newly installed furnace. be able to.

(Effects of the invention) As is clear from the above explanation, the present invention can greatly facilitate the work of installing rollers in a roller hearth kiln, which conventionally required a lot of work, and has a simple structure. Coupled with the advantage that it can be manufactured at a low cost, it has great practical value as a jig for installing rollers in roller hearth kilns that solves the problems of conventional roller installation work.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention, FIG. 2 is a partially cutaway side view, and FIG. 3 is a partially cutaway front view showing the same state of use. 1: Furnace body, 3: Roller, 4: Bearing case,
7: Truck, 8: Side wall, 9: Roller insertion hole, 1
0: Notch, 11: Fixed ring, 13: Movable ring, 18:
Fixed wheel, 19: Movable wheel.

Claims (1)

[Scope of utility model registration request] A gate-shaped truck 7 that slides in the longitudinal direction is installed on the bearing case extending along both sides of the furnace body, and the roller insertion holes 9 of the bearing case 4 are formed on both side walls 8 of the truck 7. A notch 10 is provided to support the lower surface of the roller 3 to be attached to the inner side wall 8 of the side walls 8, 8 of the truck 7.
1 and a movable ring 13 that presses the roller 3 toward the fixed ring 11, and a fixed ring 18 and a movable ring 16 that support the outer end of the roller 3 are provided on the outer side wall 8. Roller installation jig for roller hearth kiln.