JP4991485B2 - Trough equipment in strip rolling - Google Patents

Description

  The present invention relates to a trough device in rolling steel bars incorporated in equipment for hot rolling steel bars such as wire rods and bar steels.

Regarding the hot rolling system for strip steel, according to the matters described in Japanese Patent Application Laid-Open No. 2002-66615, the pass schedules of materials to be rolled such as wire rods and bar steels are generally roughly divided into a rough row, an intermediate row and a finish row. The raw material heated to the temperature is rolled to a required cross-sectional dimension through a rough line and an intermediate line, and then rolled to a desired final cross-sectional dimension (cross-sectional shape) by a finishing line. In the intermediate example, a plurality of rolling mills are arranged in series along the pass line of the material to be rolled at a predetermined interval, and the material to be rolled is passed through these rolling mills, so that the material is suitable for the finishing row. The film is stretched and rolled to the required dimensions (see the second column, first column, paragraph 0002). In addition, when the rolling speed becomes high, the temperature rise due to rolling deformation of the material becomes large, so that the temperature rise is suppressed by cooling the material to be rolled by a water-cooled trough or the like on the exit side of the rolling mill. (See page 2, second column, paragraph 0007).
In addition, depending on the type of hot rolling system for the bar steel, there is an example in which a water-cooled trough is installed for the purpose of adjusting the temperature of the bar steel before and after the rolling mill as described in JP-A-2002-160011, for example ( (See the publication, page 2, column 1, paragraph 0002).
JP 2002-66615 A JP 2002-160011 A

In an example in which an induction device (roller guide) is installed on the exit side or the entrance side of the rolling mill in the hot rolling system for strip steel, the trough device is removed by crane work when the hole shape is changed or the roll is changed. Evacuated using a mechanical evacuation device.
However, a work space for the evacuation work is required, especially in the equipment for rolling large sizes, the trough device and the guidance device are also large, so a large work space for evacuation is required and the evacuation is performed. There was a problem that labor and time required for work were required.
An object of the present invention is to reduce the trough device evacuation work time and its work load.

According to a first aspect of the present invention, there is provided a mounting base, a trough that is pivotably mounted above the mounting base, a bearing body and a pivot shaft that horizontally support the trough on the mounting base, and the trough. It is in having a stopper for restricting turning . The trough is provided with a holding plate in a horizontal state at a lower portion thereof. The bearing body includes a frame that is detachably fixed on the mounting base, and a cylindrical bearing body body that stands on the frame. The swivel shaft is provided with a fixed plate at the top, is rotatably fitted in the bearing body main body of the bearing body, and its lower end protrudes from the lower end of the bearing body main body. A lock nut for preventing separation from the bearing body is attached. The stopper includes a receiving portion, a restricting portion that can come into contact with the receiving portion, and a coupling body that releasably couples the restricting portion and the receiving portion. The receiving portion of the stopper is provided on the outer periphery of the upper portion of the bearing body and is projected outward, and the restricting portion is attached to the fixed plate of the pivot shaft and on the outside. It is overhanging. The bearing body is sandwiched between the pivot plate fixing plate and the lock nut. Said pivot axis, that is connected to the trough through the fixed plate and the holding plate are separable coupled to each other in a superimposed state.
According to a second aspect of the present invention, in addition to the first feature, a contact surface is provided on a side surface of the receiving portion, a contact surface is provided on a side surface of the restriction portion, and the contact surface is a trough. in abuttable der Rukoto above the contact surface through the swivel.
The third feature of the present invention is that the first and second features are provided, and the turning angle of the trough is at least 90 degrees from the original position.

  According to the present invention, since the trough can turn, the retraction work time and work load of the trough device can be reduced.

1 to 4, a trough device 1 according to the present invention includes a mounting base 2, a trough 3 that is pivotably attached to the mounting base, and a stopper 4 for restricting the turning of the trough. .
In the example shown in FIG. 4, the trough device 1 is disposed between the outlet side guidance device G1 of the rolling roll R1 located on the left side and the inlet side guidance device G2 of the rolling roll R2 located on the right side. Yes.

The mounting base 2 for the trough device 1 will be described.
As shown in FIGS. 1 and 2, a bearing body 21 is provided on the mounting base 2.
As shown in FIG. 1 and FIG. 5 to FIG. 7, the bearing body 21 includes a planar rectangular base 211 and a cylindrical bearing body main body 212. The gantry 211 is fixed on the mounting base 2 by bolts 22. The bearing body main body 212 penetrates the bearing hole 212a in the shaft center portion.

The trough 3 of the trough device 1 will be described.
As shown in FIGS. 1 to 4, the trough 3 is composed of a sleeve whose inlet side (left side in FIG. 2) spreads in a trumpet shape. As shown in FIG. 4, the strip hot-rolled by the rolling roll R1 is guided into the guide passage 3a of the trough 3 by the outlet side guiding device G1, cooled, and guided to the rolling roll R2 through the inlet side guiding device G2. The
As shown in FIGS. 1 to 3, the trough 3 is provided with a holding plate 31 in a horizontal state at the bottom. A pivot shaft 32 is attached to the holding plate 31.
As shown in FIGS. 1 and 5 to 7, the pivot shaft 32 is provided with a fixed plate 321 at the top. The fixing plate 321 is fixed to the lower surface of the holding plate 31 by being joined to the four corners by bolts 33 while being superimposed on the holding plate.

Here, the relationship between the bearing body 21 and the turning shaft 32 will be described with reference to FIGS. 1 and 5 to 7.
The pivot shaft 32 is rotatably fitted in the bearing hole 212a of the bearing body 21. The swivel shaft 32 can be rotated around the shaft center by a bearing 34 provided in the upper opening of the bearing body 21. The bearing 34 uses a roller bearing in the example shown in FIG. A thrust washer 35 and a dust seal 36 are provided at the opening edge in the bearing body 21. The pivot 32 has a lower end projecting from the bearing body 21, and a lock nut 37 is attached to the projecting end to prevent the pivot shaft 32 from being detached from the bearing body (FIG. 1). A thrust washer 38 and a bush 39 are disposed on the lock nut 37.

The stopper 4 will be described.
As shown in FIGS. 1 to 3, the stopper 4 includes a receiving portion 41 attached to the upper portion of the bearing body 21, a restricting portion 42 provided on the upper portion of the turning shaft 32, and the receiving portion and the restricting portion 42. The coupling body 43 to be coupled is provided.
As shown in FIGS. 5 to 7, the receiving portion 41 has a rectangular parallelepiped shape that protrudes outward (in the radial direction) from the outer periphery of the upper portion of the bearing body main body 212. The receiving portion 41 has a contacted surface 411 on the left side in FIG. 5 and has a coupling groove 412 formed in the upper portion. In the example of FIG. 7, the coupling groove 412 is a U-shaped groove cut downward from the upper surface.
As shown in FIGS. 5 to 7, the restricting portion 42 is attached to the lower surface of the fixed plate 321 of the turning shaft 32. One end portion (the right end portion in FIG. 7) of the restricting portion 42 has a rectangular parallelepiped shape that protrudes outward from the fixed plate 321. The restricting portion 42 has a contact surface 421 on the right side in FIG. 5 and has a coupling groove 422 formed in the upper portion. In the example of FIG. 7, the coupling groove 422 is a U-shaped groove cut downward from the upper surface.
The contact surfaces 421 of the restricting portion 42 can contact the contacted surface 411 of the receiving portion 41 and are in contact with each other as shown in FIG. When in such a contact state, the coupling grooves 412 and 422 are opposed to each other in a continuous state to form an integrated U-shaped groove.
The connecting body 43 is composed of bolts, and is inserted into the connecting grooves 412 and 422 in a continuous and integrated state. The receiving part 41 and the restricting part 42 which are in contact with each other can be detachably connected using a nut. (FIG. 3).

The usage of the trough apparatus according to the present invention will be described with reference to FIGS.
In order to change the hole shape or to replace the rolling roll R1 or the rolling roll R2, it is necessary to turn the trough 3 to secure a space for hole changing or replacement work.
Therefore, first, as shown in FIG. 3, the receiving portion 41 and the regulating portion 42 that are coupled by the coupling body 43 are detached. In the detachment operation, the nut is removed from the bolt which is the main body of the coupling body 43, and the bolt is taken out from both the coupling grooves 412 and 422.
Next, when the trough 3 is manually pushed in the direction of the arrow in FIG. 3, the trough is turned clockwise around the turning shaft 32, and when the turning angle reaches a predetermined angle, in the illustrated example, 90 degrees (the trough is When the position reaches the position indicated by the chain line in FIG.
Thus, when the trough 3 is in the position shown by the chain line in FIG. 3, a hole changing or exchanging space between the trough and the outlet side guiding device G1 and between the inlet side guiding device G2 is secured.
In the experimental example, the trough having a weight of 3 tons could be turned manually by 20 kg without using a crane, and the working time and workload could be reduced.

Of course, the shape of the trough 3 is not limited to the sleeve.
The turning angle is not limited to the above example, and may be less than 90 degrees or more than 90 degrees as long as the work space can be secured, but the original position (in FIG. It should be at least 90 degrees (including about 90 degrees) from the position shown.
The connecting body 43 is not limited to bolts and nuts. In the illustrated example, the coupling grooves 412 and 422 are used as means for holding the connecting body, but a through hole or the like may be used. Is not limited to the illustrated example.

It is a partially cutaway enlarged front view showing a main part of the trough device according to the present invention. It is a front view which shows the trough apparatus which concerns on this invention. It is a top view which shows the trough apparatus which concerns on this invention, Comprising: It is a figure which abbreviate | omitted the mount. It is a front view which reduces and shows the use condition of the trough apparatus concerning this invention. It is an enlarged plan view which expands and shows the bearing body and turning axis of the trough device concerning this invention. It is an enlarged front view which expands and shows the bearing body and turning axis of the trough device concerning this invention. FIG. 6 is a sectional view taken along line VII-VII.

Explanation of symbols

1 Trough device 2 Mounting base 21 Bearing body 211 Mounting base 212 Bearing body
22 bolt 3 trough 31 holding plate 32 pivot shaft 321 fixed plate
33 volts
37 Lock nut 4 Stopper 41 Receiving part 411 Abutted surface 412 Coupling groove 42 Restricting part 421 Abutting surface 422 Coupling groove 43 Linked body G1 Outlet side guidance device G2 Inlet side guidance device R1, R2 Rolling roll

Claims (3)

A mounting base, a trough that is pivotably mounted above the mounting base, a bearing body and a pivot shaft that horizontally support the trough on the mounting base, and a stopper for restricting the turning of the trough. Has
The trough has a holding plate in a horizontal state at the bottom,
The bearing body includes a frame that is detachably fixed on the mounting base, and a cylindrical bearing body body that stands on the frame,
The swivel shaft is provided with a fixed plate at the top, is rotatably fitted in the bearing body main body of the bearing body, and its lower end protrudes from the lower end of the bearing body main body. A lock nut is installed to prevent the bearing body from coming off.
The stopper includes a receiving portion, a restricting portion capable of contacting the receiving portion, and a connecting body that releasably couples the restricting portion and the receiving portion.
The receiving portion of the stopper is provided on the outer periphery of the upper portion of the bearing body and is projected outward, and the restricting portion is attached to the fixed plate of the pivot shaft and on the outside. Is overhanging,
The bearing body is sandwiched between the fixed plate of the pivot shaft and the lock nut,
The trough apparatus in the strip rolling , wherein the swivel shaft is connected to the trough through the fixed plate and the holding plate that can be separated and coupled to each other in a stacked state . A contact surface is provided on a side surface of the receiving portion, a contact surface is provided on a side surface of the restriction portion, and the contact surface can contact the contact surface through turning of a trough. The trough apparatus in the bar rolling of claim | item 1.   The trough device in the bar rolling according to claim 1 or 2, wherein the turning angle of the trough is at least 90 degrees from the original position.

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