JP6562016B2 - Roll changing jig and roll changing method - Google Patents

Description

  The present invention relates to an exchange jig used for exchanging rolls arranged in a furnace such as a heat treatment furnace or a heating furnace, and a roll exchange method using the jig.

Conventionally, an apparatus as shown in FIG. 7 is known as a roll exchanging apparatus used for exchanging a roll of a furnace such as an annealing furnace (see Patent Document 1).
The roll exchanging device 100 includes a suspension beam 120 that is suspended and transported by an overhead crane (not shown), a roll shaft chuck portion 130 that removably supports the end of the roll shaft of the roll 110 to be replaced, and a counterweight. 140. The suspension beam 120 is provided with a suspension 150, and a hook of an overhead crane is engaged with the suspension beam 120, and the roll changer is disposed near the side wall of the furnace body (not shown).

  The roll shaft chuck portion 130 is provided at the end of the suspension beam 120 on the furnace body side, and the canter weight 140 is suspended from the suspension beam 120 and is movable along the suspension beam 120. The canter weight 140 is in the vicinity of the lower position of the hanging portion 150 when the roll 110 is not held on the hanging beam 120, and when the load is moved while the roll 110 is held on the hanging beam 120. It is in the lower position near the end opposite to the furnace body side.

As described above, since the balance beam 120 is balanced by the counterweight 140 according to the presence or absence of the roll 110, the roll exchanging apparatus 100 must be a long and excessively heavy apparatus.
Further, when the roll is replaced, the overhead crane is occupied for a long time by using this long and excessively heavy apparatus and cannot be used for other work.

In order to avoid such a long, excessively heavy device, the suspension beam that is hung on the hook of the overhead crane, and a moving carriage provided with a roll axis chuck device that travels along the suspension beam, And by providing a support for fixing the furnace side of the beam to the frame of the furnace body on the beam or the frame of the furnace body, even if the moving carriage travels to the furnace side of the beam when replacing the roll, the beam does not fall down A roll changing apparatus that does not use a counterweight is described in Patent Document 1.
Also, as a roll exchange device for rolls arranged in parallel with the furnace, a roll extraction (in) device is provided on the cart that runs along the furnace side wall, and this device can be moved in the horizontal direction with a mechanism that can move in the roll extraction direction. Patent Document 2 describes a mechanism that includes a possible mechanism and a roll accommodating pace on the carriage.

JP 2003-301217 A JP-A-8-225827

In the former prior art, no counterweight is used, so the weight is reduced, but a large space for the roll changer is required, and the overhead crane is occupied when the roll is changed. An overhead crane cannot be used.
In the latter roll changer, it is assumed that the roll arrangement in the furnace is parallel, and a space is required for the carriage to travel in the roll arrangement direction. Usually, the roll arrangement is not always parallel, and the furnace Since a frame for supporting the weight of the body is arranged around the furnace body, it is difficult to secure a traveling space.
Further, in any of the above roll exchanging apparatuses, the structure of the apparatus is complicated, and the manufacturing cost and the maintenance cost are expensive.

  In view of the above circumstances, the present invention provides a furnace without using a long, excessive roll changer or a roll changer requiring a large storage space, and without occupying an overhead crane for a long time. It is an object of the present invention to provide a roll exchanging jig and a roll exchanging method that enable exchanging rolls arranged in the same manner.

In order to solve the above problems, the following means are adopted.
[1] A roll exchanging jig used for exchanging a roll disposed in a furnace and mounted on the roll driving shaft of the roll, and a roll driving shaft chuck member having a flange-like portion formed at one end and both ends The roll drive shaft chuck member and the accessory member are formed by fastening the flange shape portion of the roll drive shaft chuck member and one flange shape portion of the accessory member with bolts and nuts. And a roll changing jig characterized by being connected to each other.
[2] Connect to the other end of the accessory member by fastening the flange-like portions of adjacent accessory members with bolts and nuts at one or more opposite ends. The roll exchanging jig according to [1], wherein
[3] The length of the accessory member is shorter than the length of the torque transmission device of the drive motor, and the roll can be replaced without removing the drive motor from the installation location when the roll is replaced. Or the jig | tool for roll replacement | exchange as described in [2].
[4] The roll according to any one of [1] to [3], wherein the main body of the roll drive shaft chuck member is a pipe material, and a flange-like portion is formed at one end of the pipe material. Replacement jig.
[5] The roll replacement according to any one of [1] to [4], wherein the attachment member has a main body made of a pipe material, and the flange-like portions are formed at both ends of the pipe material. Jig.
[6] A roll exchanging jig according to any one of [1] to [5] is attached to a roll drive shaft on the drive side of the roll, and each of the suspended beams arranged on the outer sides of both side walls of the furnace, At least one chain block that can move along the suspension beam is attached, and the roll is moved while the roll shaft on the non-driving side of the roll and the roll exchanging jig on the driving side of the roll are supported by the chain block. A roll exchange method for exchanging rolls arranged in a furnace.

  The roll exchanging jig of the present invention is a compact and lightweight roll exchanging means, and therefore does not require a large storage space, and enables roll exchanging without using a long and heavy roll exchanging device. Is. In the roll exchange using this jig, the roll exchange can be performed in a shorter time than the conventional one, and the overhead crane is not occupied for a long time.

The roll arranged in a furnace is shown. The front view (a) and side view (b) of the roll drive shaft chuck member of the roll replacement jig are shown. The front view (a) and side view (b) of the attachment member of the jig | tool for roll exchange are shown. The jig | tool for roll replacement | exchange which has one attachment member is shown. The jig for roll exchange which has two attachment members is shown. Steps 1 to 3 of roll exchange are schematically shown. Steps 4 to 7 of roll exchange are schematically shown. 1 shows a roll changer (conventional example) using a counterweight.

Specific embodiments of the roll exchanging jig and roll exchanging method of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a roll 1 arranged in a furnace has a roll shaft 2 on each of a driving side and a non-driving side, and the roll shaft 2 usually has a smaller diameter than that of the shaft portion. A drive shaft 3 is formed. A drive motor 4 is connected to one of the roll drive shafts 3 via a torque transmission device 5, and the roll 1 is rotationally driven during operation of the furnace to convey the conveyed product carried into the furnace. (See Fig. 6-1). The drive motor 4 is installed on the floor near the outside of one side wall of the furnace.

The roll 1 is normally replaced after the torque transmission device 5 interposed between the roll drive shaft 3 on the drive side and the drive motor 4 is removed.
In the present invention, the roll exchanging jig 6 is attached to the roll drive shaft 3 of the roll from which the torque transmission device 5 has been removed.
The roll exchanging jig 6 of the present invention includes a roll drive shaft chuck member 7 and at least one additional member 12 as will be described later.
As can be seen from FIG. 1, the roll drive shaft 3 of the roll is formed at the end of the roll shaft 2, so that the roll exchanging jig 6 of the present invention for chucking the roll drive shaft 3 Compared to chucking, the length can be shortened. Therefore, the weight can be further reduced.

The roll drive shaft chuck member 7 includes a chuck portion of the roll drive shaft at one end. For example, as shown in FIG. 2, the main body is a pipe material 8, and a flange-like portion 9 is provided at one end of the pipe material. Can be manufactured. The flange-like portion 9 can be formed by attaching a circular or rectangular plate-like body to the pipe material 8 at one end of the pipe material 8. Although the opening at the end of the pipe member 8 is blocked by this plate-like body, the plate-like member having a hole having the same diameter as the inner diameter of the pipe member 8 is formed at the end of the pipe member 8. The end of the pipe member 8 can be opened.
Moreover, you may attach the some reinforcing material 10 between the outer peripheral surface of the pipe material 8 edge part, and the back surface of the flange-shaped part 9. FIG.

The roll drive shaft 3 is fitted and chucked from the opening of the pipe member 8 on the side where the flange-like portion 9 of the roll drive shaft chuck member 7 is not formed. The roll drive shaft 3 may differ depending on the roll, but by changing the diameter of the pipe material 8, it is possible to cope with roll drive shafts having various diameters.
A plurality of bolt insertion holes 11 are formed in the vicinity of the periphery of the flange-shaped portion 9.
The pipe material 8 and the flange-shaped portion 9 are preferably made of steel. In this case, the flange-like portion can be welded and attached to the end portion of the pipe material by welding.

The attachment member 12 has flange-like portions 14 formed at both ends. For example, as shown in FIG. 3, the main body is a pipe member 13 and the flange-like portions 14 are formed at both ends of the pipe member. can do. The flange-like portion 14 can be formed by attaching a circular or rectangular plate-like body to the pipe material 13 at both ends. In this case, the openings at both ends of the pipe material 12 are closed by the plate-like body, but the plate-like body having a hole having the same diameter as the inner diameter of the pipe material 13 at the center is used as the pipe material 13. It can also be attached to the end of the pipe and the end of the pipe member 13 can be opened.
A reinforcing material 15 may be provided between the outer peripheral surface of the pipe material end and the back surface of the flange-shaped portion 14.
The pipe material 13 and the flange-like portion 14 are preferably made of steel. In this case, the flange-like portion 14 can be welded and attached to the end portion of the pipe material 13 by welding.

A plurality of bolt insertion holes 16 are formed in the vicinity of the periphery of the flange-like portion 14 of the attachment member 12. The flange-shaped portion 14 is brought into contact with the flange-shaped portion 9 of the roll drive shaft chuck member 7, bolts are inserted into the bolt insertion holes of both flange-shaped portions, and are fastened with bolts and nuts. And the attachment member 12 can be connected and connected.
Similarly, the flange-like portions 14 of the two attachment members 12 are brought into contact with each other, the bolts are inserted into the bolt insertion holes 14 of both flange-like portions, and fastened with bolts and nuts to connect the two attachment members. To be able to connect.

FIG. 4 shows a roll exchanging jig 6 in which one attachment member 12 is connected to the roll drive shaft chuck member 7. FIG. 5 shows a roll exchange jig 6 in which another attachment member 12 is further connected to the attachment member 12 of the roll exchange jig shown in FIG. One or more attachment members 12 can be further connected to the roll exchanging jig shown in FIG. 5 to make the roll exchanging jig longer.
4 and 5, bolts and nuts that fasten the flange-like portion 9 of the roll drive shaft chuck member 7 and the flange-like portion 14 of the accessory member, and bolts that fasten the flange-like portions 14 of the accessory member, The nut is not shown.

  The roll is exchanged by suspending the roll 1 with a chain block 18 attached to the suspension beam 17. The suspension beam 17 is deployed in a state of being suspended from the outside of both side walls of the furnace by an overhead crane (not shown) (see FIGS. 6A and 6B). The chain block 18 can be moved manually along the suspension beam 17. The roll 1 can be suspended by manually hanging and supporting the chain 19 hanging from a chain wheel (not shown) of the chain block body on the left and right roll shafts 2 and the roll drive shaft 3 of the roll.

FIGS. 6-1 and 6-2 schematically show steps (procedures) of the roll exchanging method of the present invention.
Here, 20 is a furnace such as an annealing furnace in which rolls 1 to be replaced are arranged. A roll support opening 21 is formed on the side wall of the furnace. In FIGS. 6A and 6B, the furnace 20 shows a cross section of both side walls, but the ceiling wall and the hearth wall are omitted.
The roll 1 is rotationally driven by a drive motor 4 installed on a floor surface outside the side wall of the furnace via a torque transmission device 5.

The procedure of the roll exchanging method of the present invention includes the following steps 1 to 7.
(Step 1)
As shown in FIG. 6A, the chain 19 of the chain block 18 attached to the suspension beam 17 is manually hung on the roll shafts 2 on both sides of the roll, and the roll 1 is kept horizontal and suspended. In this state, the torque transmission device 5 is removed from the drive side roll drive shaft 3 and the drive motor 4.
The chain 19 of the chain block is hung on the roll drive shaft 3 at the end of the roll shaft 2 on the left side (non-drive side) of the roll, but may be hung on the roll shaft 2 having a larger diameter. On the right side (driving side) of the roll, a torque transmission device is mounted, so that the roll shaft 2 is hung.

(Step 2)
As shown in FIG. 6B, the roll drive shaft chuck is interposed between the roll 1 from which the torque transmission device 5 has been removed and the drive motor 4 while the roll 1 is suspended by the chain block 18. A roll replacement jig 6 in which the member 7 and one attachment member 12 are connected is inserted, and the chuck portion of the chuck member 7 of the jig is mounted on the roll drive shaft.
Here, if the length of the attachment member 12 is made shorter than the length of the torque transmission device 5 [the length in the direction of the rotation axis in FIG. 6A (a)], the drive motor 4 is not removed from the floor. The roll exchanging jig 6 can be quickly mounted on the roll drive shaft 3.

(Step 3)
As shown in FIG. 6C, the chain 19 of the right side (drive side) chain block is manually moved from the site of the roll shaft 2 to the attachment member 12 of the roll changing jig 6, and the left side ( The chain block 18 on the non-driving side is manually moved along the suspension beam 17 to the left by the length of the accessory. At this time, the right chain block 18 does not move along the suspension beam 17.
When step 3 is completed, a part of the roll 1 main body is exposed to the outside from the left furnace side wall.

(Step 4)
One additional member 12 is further connected to the roll exchanging jig 6 in step 3. The connection can be made by abutting the flange-like portion 14 of each attachment member 12 and connecting them with bolts and nuts. Also here, if the length of the newly connected accessory member 12 is made shorter than the length of the torque transmission device 5 [length in the direction of the rotation axis in FIG. The roll replacement jig 6 can be quickly mounted on the roll drive shaft 3 without being removed from the roll drive shaft 3. The same applies to the following.
Next, as shown in FIG. 6D, the chain 19 of the right (drive side) chain block 18 is manually moved from the roll shaft portion to the newly connected accessory member 12 and left side (non-drive). Side chain block 18 is manually moved along the suspension beam to the left by the length of the accessory. At this time, the right chain block 18 does not move along the suspension beam 17.
When step 4 is completed, the roll body is further exposed from the left side furnace wall.

(Step 5)
One additional member 12 is further connected to the roll exchanging jig 6 in step 4. The same operation as step 4 is repeated until the roll moves to a position outside the outer wall on the left side of the furnace including the roll shaft portion. FIG. 6E shows a state where the roll 1 is carried out of the furnace by mounting the roll changing jig 6 having the four attachment members 12 on the drive shaft of the roll 1. Yes.

(Step 6)
Two chain blocks are newly installed near the furnace outer wall of the left (non-drive side) suspension beam 17, one of which supports the roll shaft on the drive side of the roll, and the other one replaces the roll. Supports the roll drive shaft chuck of the jig.
In this way, the roll 1 is maintained horizontally by the four chain blocks 18 outside the left side wall of the furnace.
Next, the two chain blocks supporting the roll 1 are moved to the left, the drive side roll drive shaft 3 is extracted from the roll drive shaft chuck member 7, and the roll is completely extracted from the furnace.
The roll extracted from the furnace is lowered to a cart or the like and transported to a roll storage place.

(Step 7)
Since the roll exchanging jig from which the roll has been removed is supported by the chain block hung on the hanging beam, a reverse roll of steps 1 to 6 is followed to install a new roll in the furnace. Replace.

As described above, in the present invention, roll replacement is performed using a chain block using a lightweight roll replacement jig composed of a roll shaft chuck member and at least one additional member. Since the rolls arranged in the furnace can be changed over time, the overhead crane is not occupied for a long time.
And since the roll replacement jig is not long and excessively large, and the structure is not complicated, manufacturing costs and maintenance costs can be kept low.

1: Roll 2: Roll shaft 3: Roll drive shaft 4: Drive motor 5: Torque transmission device 6: Roll replacement jig 7: Roll drive shaft chuck member 8: Pipe member 9 of roll drive shaft chuck member: Roll drive shaft Flange portion 10 of the chuck member: Reinforcement member 11 of the roll drive shaft chuck member 11: Bolt insertion hole 12 of the roll drive shaft chuck member 12: Attachment member 13: Pipe member 14 of the attachment member 15: Flange shape portion 15 of the attachment member Reinforcing material 16: Bolt insertion hole 17 of accessory member: Suspension beam 18: Chain block 19: Chain of chain block 20: Furnace 21: Opening portion for roll support of furnace 100: Roll changer 110: Roll 120: Suspension beam 130 : Roll shaft chuck part 140: Counterweight 150: Hanging part

Claims (6)

A roll exchanging jig that is used for exchanging a roll disposed in a furnace and is attached to the roll drive shaft of the roll,
It consists of a roll drive shaft chuck member with a flange-like portion formed at one end and an accessory member with a flange-like portion formed at both ends, and the flange-like portion of the roll drive shaft chuck member and one flange-like portion of the accessory member are bolted A roll exchanging jig, wherein the roll drive shaft chuck member and the attached member are connected by fastening with a nut.   The other end of the attachment member is connected to an attachment member having flange portions formed at one or more ends by fastening the flange portions of adjacent attachment members with bolts and nuts. The roll replacement jig according to claim 1, wherein the roll replacement jig is characterized in that:   The length of the said attachment member is made shorter than the length of the torque transmission apparatus of a drive motor, and roll replacement | exchange was enabled at the time of roll replacement | exchange, without removing a drive motor from the installation location. The jig for roll replacement as described.   The roll replacement treatment according to any one of claims 1 to 3, wherein the main body of the roll drive shaft chuck member is a pipe material, and a flange-like portion is formed at one end of the pipe material. Ingredients.   The roll replacement jig according to any one of claims 1 to 4, wherein a body of the attachment member is a pipe material, and the flange-like portions are formed at both ends of the pipe material. . The roll drive jig according to any one of claims 1 to 5 is mounted on a roll drive shaft on a roll drive side, and a suspension beam is attached to each of the suspension beams arranged outside both side walls of the furnace. At least one chain block that can be moved along is attached, and the roll is moved while the roll shaft on the non-driving side of the roll and the roll exchanging jig on the driving side of the roll are supported by the chain block. A roll exchange method for exchanging rolls placed in a furnace.

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