JP2516700Y2 - Rolled material cooling floor - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a cooling floor attached to a rolling facility for rolled materials such as bar steel and shaped steel.

[Problems to be solved by conventional techniques and devices]

In the production of bar steel, shaped steel, etc., as shown in FIG. 5, the rolled material that has passed through the final rolling mill 8 is conveyed to the front surface of the straightening floor 5 by the rollers of the run-in table 6 and the run-in trough 7 and stopped. After being transferred to the correction floor 5 by the movable rake bar 1, it is transferred to the fixed rake bar 2 on the cooling floor and cooled by the movable rake bar 1.

As shown in FIG. 6, the fixed rake bar 2 is formed in a sawtooth shape having a plurality of mountain-shaped inclined surfaces of the same shape including an inclined surface 2a on the left side and an inclined surface 2b on the right side in the figure,
The inclination of the inclined surface 2a (the inclination angle with respect to the vertical surface is indicated by α) is configured to be larger than the inclination of the inclined surface 2b. Further, the movable rake bar 1 of the fixed floor is formed in a sawtooth shape having a plurality of mountain-shaped inclined surfaces of the same shape composed of the inclined surfaces 1a and 1b having the same structure as the inclined surfaces 2a and 2b in a substantially horizontal direction. The angled slopes of the fixed rake bar 2 are provided at the same pitch as the angled slopes of the fixed rake bar 2, and the circular movements are made almost in the vertical plane, so that the rolled material of the fixed rake bar 2 is changed to the angled slope of the fixed rake bar 2. It is designed to be conveyed in a horizontal direction by one pitch.

In the cooling floor for handling steel bars, as shown in FIG. 6, the inclined surface of the movable rake bar 1 is upstream of the inclined surface of the fixed rake bar in the conveying direction of the rolled material (left in the figure).
The movable rake bar 2 has a reference position (indicated by a solid line in the figure) below the fixed rake bar, which is separated by a distance of p / ₂₋ α which is slightly smaller than half the pitch p of the inclined surface.
As shown by the arrow in FIG. 6 from this reference position, a circular motion is performed while maintaining a substantially horizontal posture within a substantially vertical plane with a radius of p / ₂ + α which is slightly larger than half the pitch p of the angled inclined surface. (The two-dot chain line in the figure indicates the position of the movable rake bar during circular movement).

Therefore, the steel bar material 3 on the fixed rake bar 2 moves along the circular motion of the movable rake bar 1 along the inclined surface 1 of the movable rake bar.
It is carried on the valley bottom where a and 1b intersect, and is carried to the right by twice the radius of circular motion in FIG. 5, that is, p + 2α, and then carried to the inclined surface 2a of the fixed rake bar 2. When the movable rake bar 1 separates downward from the inclined surface 2a of the fixed rake bar,
As shown in FIG. 6, it falls while rotating on the inclined surface 2a and is positioned on the valley bottom where the inclined surface 2a and the inclined surface 2b intersect.

In this way, the steel bar 3 falls while rotating on the inclined surface 2a, so that the cooling effect and the correction effect can be improved.

When the movable rake bar 1 further continues the rotational movement, the steel bar material 3 placed on the valley bottom where the inclined surfaces 2a and 2b of the fixed rake bar 2 intersect with each other, the next inclined surfaces 1a and 1b on the right side in FIG.
The fixed rake bar 2 is carried on the bottom of the intersecting valley bottom and is conveyed to the next sloped surface 2a on the right side of the fixed rake bar 2.

As described above, the steel bar material 3 is conveyed to the right in FIG. 5 by one pitch of the mountain-shaped inclined surface of the fixed rake bar 2 with one rotation of the movable rake bar 1, and the steel bar material is also inclined surface.
It will be cooled and straightened by falling while rotating 2a.

However, if the cooling floor shown in FIGS. 5 and 6 is used in equipment for producing both steel bars and shaped steel, one end of shaped steel 4 is fixed as shown in FIG. When the movable rake bar 1 conveys the shaped steel 4 in the next rotation, the shaped steel 4 tilts when the movable rake bar 1 rotates in the next rotation. You will be climbing while crawling on surface 2a.

For this reason, in order to convey the shaped steel, the conveying distance per one rotation by the movable rake bar 1 must be the same as the pitch of the angled inclined surfaces 2a and 2b of the fixed rake bar. Therefore, the cooling bed shown in FIGS. 4 and 5 which is very effective for steel bars could not be used for the equipment for producing both steel bars and shaped steel.

The present invention is intended to provide a cooling floor of rolled material that can solve the above problems.

[Means for solving the problem]

The present invention includes a fixed rake bar having a plurality of mountain-shaped inclined surfaces of the same shape provided on the upper surface in a substantially horizontal direction and a movable rake bar having a plurality of mountain-shaped inclined surfaces having the same shape provided on the upper surface in a substantially horizontal direction, The angled slopes of the fixed rake bar and the movable rake bar are provided at the same pitch, and
The movable rake bar is circularly moved in a vertical plane to move the rolled material on the fixed rake bar to one of the angle-shaped inclined surfaces of the fixed rake bar.
In the cooling floor of rolled material transported by pitch, the transport distance per rotation of the rotary rake bar is slightly increased with respect to the pitch of the angled slope of the fixed rake bar, and the transport direction of the angled slope of the fixed rake bar is increased upstream. It is characterized in that the slope on the upstream side of the mountain-shaped slope of the movable rake bar in the conveying direction is made steeper than the slope on the side.

[Action]

In the present invention, by slightly increasing the conveying distance per rotation of the movable rake bar with respect to the pitch of the mountain-shaped inclined surface of the fixed rake bar, as in the cooling floor shown in FIGS. 5 and 6, As the movable rake bar rotates, the rod-shaped rolled material is transported to the sloped surface upstream of the mountain-shaped sloped surface of the fixed rake bar in the transport direction, and falls while rotating on the sloped surface to cool and correct the raked surface. Is improved.

On the other hand, when a rolled material having a shape such as shaped steel is conveyed, the end of the rolled material moves to the inclined surface of the fixed rake bar on the upstream side in the conveying direction due to the circular motion of the movable rake bar. It is transported and hooked on the same inclined surface. The transport distance per rotation of the movable rake bar is set slightly larger than the pitch of the angled slope of the fixed rake bar,
In addition, since the slope of the mountain-shaped slope of the movable rake bar on the upstream side in the transport direction is steeper than the slope of the slope on the upstream side of the mountain-shaped slope of the fixed rake bar in the transport direction, the following circular movement of the movable rake bar is performed. When the mountain-shaped inclined surface of the movable rake bar makes an upward circular motion when the inclined surface on the upstream side in the conveying direction contacts the end of the rolled material, the end of the rolled material is pushed upward and upstream in the conveying direction. Thus, the end of the rolled material moves toward the valley bottom of the inclined surface of the movable rake bar and is carried by the valley bottom. As a result, the rolled material is smoothly conveyed by one pitch to the next mountain-shaped inclined surface of the fixed rake bar with the circular motion of the movable rake bar.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS.

This embodiment is similar to the device shown in FIG. 5 and FIG.
The present invention relates to a cooling floor in which rolled materials such as bar steel and shaped steel are conveyed from the run-in trough 7 and the run-in table 6 which are inclined from the final rolling mill.

On the upper surface of the fixed rake bar 2 of the cooling floor, a plurality of mountain-shaped inclined surfaces composed of inclined surfaces 2a and 2b are provided in a substantially horizontal direction as in the device shown in FIGS.
The inclination angle β of 2a is set to be larger than the inclination angle α in FIGS. 5 and 6. The mountain-shaped inclined surface on the upper surface of the movable rake bar 1 has the same configuration as the device shown in FIGS. 5 and 6, and the inclined surface 1a of the movable rake bar 1 is steeper than the inclined surface 2a of the fixed rake bar 2. Is set.

Further, the movable rake bar 1 has the same reference position as the device shown in FIGS. 5 and 6, and similarly, is slightly larger than the pitch p of the angled inclined surface of the fixed rake bar 2.
With a diameter of + 2α, it makes a circular motion while maintaining a substantially horizontal posture within a vertical plane.

In the present embodiment, when the steel bar material 3 is conveyed, as in the case of the apparatus shown in FIGS. 5 and 6,
The steel bar 3 is carried by the circular motion of the movable rake bar 1 and carried on the inclined valley bottom of the movable rake bar 1 and conveyed to the inclined surface 2a of the fixed rake bar 2, and falls while rotating on the inclined surface 2a. It reaches the bottom of the valley where 2a and 2b intersect, and is sent to the next inclined surface 2a by the circular motion of the next movable rake bar 1 (see FIG. 4). In this case, since the inclination angle β of the inclined surface 2a is larger than the inclination angle α of the device shown in FIGS. 5 and 6, the steel bar material 3 surely rotates and falls, so that the steel bar material 3 is cooled. The effect and the correction effect are improved.

On the other hand, when the shaped steel material 4 is conveyed,
As shown in FIG. 7, the shaped steel material 4 is hooked on the inclined surface 2a of the fixed rake bar 2 as described with reference to FIG. At this time, the shaped steel material 4 has a point b where the point a of the inclined surface 2a of the fixed rake bar 2 and the inclined surface 2a, 2b on the upstream side in the conveying direction intersect.
Supported by.

The transport distance of the movable rake bar 1, that is, the diameter of the circular motion is
Since the pitch of the fixed rake bar 2 is larger than the pitch of the sloped surfaces 2a, 2b of the fixed rake bar 2, the movable rake bar 1 makes a circular motion and its sloped surface.
When the 1a is in contact with the end of the shaped steel material 4, as shown by the arrow in FIG. 3, the inclined surface 1a is upward with respect to the end of the shaped steel material 4 and upstream in the conveying direction (in FIG. 3). Move to the left). In addition, the inclination of the inclined surface 1a of the movable rake bar 1 is
As described above, it is set steeper than the inclination of the inclined surface 2a of the fixed rake bar 2.

Therefore, the inclined surface 1a of the movable rake bar 1 pushes up the end portion of the fixed rake bar 2 of the shaped steel material 4 which is in contact with the point a, and a force in the direction c in FIG. 3 is applied, and By the movement of the inclined surface 2a toward the upstream side in the transport direction, the same end portion is pushed in by δ in FIG.
Therefore, the shaped steel material 4 slides in the direction d in FIG. 3 while being in contact with the top portion b, and as a result, the shaped steel material 4 is inclined on the inclined surface of the fixed rake bar 2.
Move toward the valley bottom where 2a and 2b intersect. As a result, as shown in FIGS. 2 and 3, the shaped steel material 4 is supported by the intersecting valley bottoms and tops of the inclined surfaces 1a and 1b of the movable rake bar 1, and the angled slope of the next fixed rake bar 2 smoothly. Is transported to the surface.

In this way, the shaped steel material 4 can be smoothly transported even if the wedge-shaped inclined surface of the fixed rake bar 2 and the transport distance per rotation of the movable rake bar 1 are different.

[Effect of device]

As described above, according to the present invention, the conveying distance per rotation of the movable rake bar which moves circularly is made slightly larger than the pitch of the angled inclined surface of the fixed rake bar, and the conveyance of the angled inclined surface of the fixed rake bar is performed. By making the slope of the mountain-shaped slope of the movable rake bar upstream in the conveying direction from the slope on the upstream side in the direction, (1) the cooling effect and straightening effect of the bar-shaped rolled material are improved, and high quality products can be obtained. .

(2) In the case of a rolled material, even if there is a difference between the conveying distance per rotation of the movable rake bar and the pitch of the mountain-shaped inclined surface of the fixed rake bar, it is possible to reliably feed by one pitch.

It is possible to exert an effect.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 and FIG.
FIG. 4 is an explanatory view of a transportation state of a shaped steel material in the same embodiment, No. 4
The figure is an enlarged view of the portion of the rake bar in the same embodiment, fifth.
FIG. 6 is a plan view showing a conventional cooling floor, FIG. 6 is an explanatory view when a steel bar material is transported in the conventional cooling floor, and FIG. 7 is an explanatory view when a shaped steel material is transported in the conventional cooling floor. Is. 1 ... Movable rake bar, 1a, 1b ... Sloping surface of movable rake bar, 2
… Fixed rake bar, 2a, 2b… Fixed rake bar slope, 3…
Steel bar, 4… Shaped steel, 5… Straightening floor, 6… Run-in table, 7…
Run in trough, 8… rolling mill.

Claims (1)

(57) [Scope of utility model registration request] 1. A fixed rake bar having a plurality of mountain-shaped inclined surfaces of the same shape provided on its upper surface in a substantially horizontal direction, and a movable rake bar having a plurality of mountain-shaped inclined surfaces of the same shape provided on its upper surface in a substantially horizontal direction. , The fixed rake bar and the movable rake bar have angled slopes at the same pitch, and
The movable rake bar is circularly moved in a vertical plane to move the rolled material on the fixed rake bar to one of the angle-shaped inclined surfaces of the fixed rake bar.
In the cooling floor of rolled material transported by pitch, the transport distance per rotation of the rotary rake bar is slightly increased with respect to the pitch of the angled slope of the fixed rake bar, and the transport direction of the angled slope of the fixed rake bar is increased upstream. The cooling floor of rolled material, characterized in that the slope of the mountain-shaped slope of the movable rake bar is steeper than the slope of the side slope of the side.