JPS6020290B2 - Lifting rake type steel material rotation conveyance device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevating rake-type steel material turning and conveying device that rotates and transfers steel materials used in steel material cooling beds, heating furnaces, and the like.

A certain prior art technology includes a fixed rake having a V-shaped groove capable of softening the steel material, an elevating rake installed in parallel with the fixed rake, and a drive means for moving the elevating rake vertically and horizontally to turn the steel material by 90 degrees. It has

When transporting steel materials, the steel materials placed in the V-shaped groove of the fixed rake are pushed up and supported all at once by the lifting rake, the lifting rake is moved horizontally to carry the steel material in the conveying direction, and then the lifting rake is lowered. and place it on another V-shaped groove of the fixed rake. In such prior art, all the steel materials are once elevated using a lifting rake. However, in recent years, for the purpose of increasing the size of steel products or improving production efficiency and yield, the weight of steel materials supplied to cooling beds or heating furnaces has become increasingly required.

If the weight of steel in the cooling bed or heating furnace increases,
The mechanical strength of not only fixed rakes but also lifting rakes must be improved. In addition, the driving power of the lifting rake must be increased. Therefore, equipment costs increase. SUMMARY OF THE INVENTION Therefore, an object of the present invention is to improve the mechanical strength of a lifting rake and to provide a turning and conveying device for steel materials that can transport heavy steel materials while suppressing an increase in driving power as much as possible.

FIG. 1 is a plan view of one embodiment of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a simplified cross-sectional view taken along line mm in the previous figure.

The present conveyance device 1 is applied to a cooling bed or a heating furnace. A steel material A having a square cross section is conveyed as indicated by the arrow 3 by an inlet roller table 2, and transferred to the conveying device 1 by a receiving pusher transfer 4. The conveyance device 1 conveys the steel material A in the conveyance direction 5, and the steel material A is cooled or heated during this process. The cooled or heated steel material A is delivered to the delivery side roller table 7 by the delivery chain transfer 6 and conveyed in the direction of the arrow 8.
In the conveying device 1, the plurality of fixed rakes 9 are arranged parallel to the conveying direction 5 and at intervals in a direction perpendicular to the conveying direction 5 (left-right direction in FIG. 3).

Between the fixed rakes 9, a plurality of lifting rakes 10 are arranged in parallel to the fixed rakes 9. The driving means 11 for raising and lowering and horizontally moving the lifting rake 10 is constructed as follows. At the bottom of each lifting rake 10, legs 12a, 1
Support beams 12 and 13 are fixed via 3a.
The support beams 1, 2, 13 are arranged at intervals in the conveying direction 5 and extend horizontally and at right angles to the conveying direction 5.
Rails 14 and 15 having horizontal guide surfaces in the transport direction 5 are fixed to the lower portions of the support beams 12 and 13. Rollers 16 and 17 that support the guide surfaces of rails 14 and 15 are pivotally supported by one ends of levers 18 and 19. The intermediate portions of the dogleg-shaped levers 18 and 19 are fixed to interlocking shafts 20 and 21 that are horizontally pivoted at fixed positions. Lever 18
, 19 are pin-coupled to an interlocking rod 24, and the interlocking shaft 20 is rotated by a lifting hydraulic cylinder 26 via a drive lever 25. A fixing piece 27 is fixed to the lower part of the lifting rake 10. One end of the link 28 is connected to the fixing piece 27 by a pin 29, and the other end is connected to the upper end of the lever bar 30 by a pin 31 above the pin 29 and rearward in the transport direction 5. The lower end of the lever 30 is fixed to an interlocking shaft 32 that is horizontally supported at a fixed position. The interlocking shaft 32 is rotated by a positioning hydraulic cylinder 34 via a lever 33. The rotational angular position of the axis of motion 32 and therefore of the lever 30 is shown in FIG.
They are indicated by reference signs sl to s5. Figure 4 shows lifting rake 1
0 indicates the lower limit position.

The fixed rake 9 has a V-shaped groove 36 in the conveying direction 5 with a pitch p.
are formed continuously. Below, the pitch is V-shaped groove 36
shall be the pitch of The V-shaped groove 36 is made up of an upward fixed inclined surface 37 and a downward fixed inclined surface 38, and has a substantially symmetrical shape with respect to a vertical plane passing through the valley bottom 39 thereof. The angle Q that the forehead slope 38 forms with the horizontal plane is larger than the friction angle of the steel material A, but does not exceed 45 degrees. In other words, the angle is determined so that the cross-sectional view 〇G of the steel material A is located behind the valley bottom 39, which is the center of rotation of the steel material A, in the conveying direction 5, and in this embodiment, Q =
It is 33 degrees. The friction angle of the steel material A is considered here because when transporting a small steel material, which is shown superimposed by the broken line on the steel material AI in Fig. 5-4, the steel material is fixed from Fig. 5-3 to Fig. 5-4. This is because it is necessary to slide on the fixed inclined surface 38 of the rake. The angle that the forehead slope 37 makes with the horizontal plane is approximately equal to Q, and is, for example, =30 degrees.

The angle y of the slopes 37 and 38 is greater than 90 degrees (13
5-) degrees, in this example Q=3
Since 3 degrees = 30 degrees, yヱ117 degrees. In the lifting rake 1, first protrusions 41 and second protrusions 42 are formed alternately in the conveyance direction 5.

The first protrusion 41 includes an upward slope 43 that forms a 90 degree angle with the downward fixed rear slope 38, and a horizontal top 44;
A downward push-up forehead slope 4 parallel to the downward fixed slope 38
5, and a downwardly inclined surface 46 which is at a steeper angle than the pushed-up forehead slope 45 and makes an angle of 90 degrees with the upward fixed side surface 37. The connecting portion forms a pushing portion 47 . Second protrusion 4
2 is an upwardly facing inclined surface 48 which forms an angle of 90 degrees with the downward fixed inclined surface 38, a horizontal top 49, and an angle formed with the upward fixed inclined surface 37 of 90 degrees, that is, a horizontal surface (901). It consists of a downwardly inclined surface 50 that forms an angle, a horizontal support step 51, and a downwardly inclined surface 52 that is parallel to the downward fixed inclined surface 38. The forehead slopes 52 and 43 are continuous,
The slopes 46 and 48 are formed with a horizontal portion 53 in between. The intersection point 54 between the support step 51 and the downward slope 50 (hereinafter referred to as the support step end) is the point at which the steel material (AI, A3 in FIGS. 4 and 5 1) attached to the upward fixed slope 37 is connected. It contacts the lower ridge at the valley bottom 39 and pushes up. Further, the push-up forehead slope 45 and the push portion 47 are connected to the downward fixed slope 3
8 (A2 in Figure 4 and Figure 5 1)
, A4) that is in contact with the downward fixed inclined surface 38 and is pushed up. The pushing part 47 is shown in Fig. D of steel materials A2 and A4.
It comes into contact with the outer surfaces of the steel materials A2 and A4 at a position rearward of G in the conveying direction 5. The supporting stepped portion 51 and the pushing portion 47 located in front of the supporting step portion 51 in the conveying direction 5 are arranged so as to come into contact with the steel material being fought at three pitch intervals. The supporting stepped portion 51 and the pushing portion 47 located behind the supporting step portion 51 in the conveyance direction 5 are arranged so as to contact the steel material being subjected to the battle at two pitch intervals. The relative positions of the support step portion 51 and the push portion 47 in the vertical direction are determined such that the support step end portion 54 comes into contact with the steel material A3 when the lifting rake 10 is raised. Drive means 1
1, the supporting step end 54 of the lifting rake 10 is connected to the fixed rake 9.
It is configured to follow a trajectory 56 (see FIG. 4) that passes through the valley bottom 39 of .

The operation will be explained with reference to FIG. 5 of Table 1 and Table 1.

First, the lever 30 is moved by the positioning hydraulic cylinder 34.
is set at the swing angle position s1, and the lifting hydraulic cylinder 26 is extended to bring it into the state shown in FIG. 51. At this time, lifting rake 1
0' is at the lower limit position. Fixed rake 9 for steel materials AI and A3
The steel material A2,
A4 is mounted on the downward fixed inclined surface 38. Steel material A
1, A2 runs on the V-shaped groove 36 at 2 pitch intervals, and the steel material A
2 and A3 are 3 pitches apart, and steel materials A3 and A4 are again 2 pitches apart. Next, when the lifting hydraulic cylinder 26 is contracted, the lifting rake 10 continues to rise while maintaining a horizontal state while tracing an arcuate trajectory centered on the pin 31 and having a radius equal to the length of the link 28. The state shown in FIG. 52 is reached.

The support stage end portion 54 of the lifting rake 10 coincides with the valley bottom 391 of the fixed rake 9, and is in a state immediately before pushing up the lower edges of the steel materials AI and A3. At this time, the pushing part 47 is made of steel material A2.
, below A4. As the lifting hydraulic cylinder 26 is further reduced, the lifting rake rises by one river and reaches the fifth position.
The state shown in FIG. 3 is reached.

The steel materials AI and A3 are rotated in the transport direction 5 around the apex 40 of the fixed rake 9 while their lower edges are supported by the support step end portions 54 and are raised. When the drawing OG of the steel material AI, A3 reaches the front of the apex 40 in the conveying direction 5, the steel material AI
, A3 are rotated forward in the transport direction 3 by 63 degrees from the attitude shown in FIG. 51 due to the action of gravity as shown in FIG. 54. The pushing part 47 pushes up the steel materials A2 and A4 while sliding on the outer surfaces thereof. When the steel materials A2 and A4 in FIG. In this way, the steel materials A2 and A4 are rotated forward in the transport direction 5 by 27 degrees with the lower edge in contact with the valley bottom 39 as the center of rotation. FIG. 5 shows a state in which the lifting rake 10 is at the upper limit position.

The lower ends of the downward forehead slopes 46 and 52 coincide with the valley bottom 39. The steel materials AI and A3 are supported by the downward fixed slope 38, the downward mirror slope 52, and the upward slope 43. Steel materials A2 and A4 are supported by a downward slope 46 and an upward fixed forehead slope 37. As mentioned above, while the lifting rake 10 reaches the upper limit position in FIG. 5 from the lower limit position in FIG. steel material A1
, A3 and A2, A4 have different turning times.

Therefore, the impact force of the fixed rake 9 and the lifting rake 10 at the time of turning is smaller than that in the case where the steel materials AI to A4 all turn at the same time. In addition, at least a part of the steel materials AI to A4 is always sent to the fixed rake 9,
Since it rotates, an increase in the strength and driving power of the lifting rake 10 can be suppressed. Next, the lifting hydraulic cylinder 26 is extended to bring the lifting rake 10 to the lower limit position. After that, the lever 30 is moved by the positioning hydraulic cylinder 34.
is set from the rotation angle position sl to s3, and the lifting rake 10
is moved back by two pitches in the opposite direction to the conveying direction 5. This state is shown in FIG. The downward fixing inclined surface 38 of the fixing rake for the steel material A5 will also be taught. Therefore, the lifting hydraulic cylinder 26 is contracted to raise the lifting rake 10 to the upper limit position shown in FIG. 5. Lifting rake 10
During the ascent, steel materials A2 and A4 first turned 63 degrees, and
Next, steel materials A1, A3, and A5 are rotated 27 degrees. Steel AI
is further turned 30 degrees for delivery, and is delivered to the delivery side roller table 7 by the delivery chain transfer 6. Subsequently, as shown in FIG. 5, the lifting rake 10 is lowered to the lower limit position, and the positioning hydraulic cylinder 34 is extended to move the lever 30 from the rotation angle position s3 to s
5, and the lifting rake 10 is moved back by two pitches in the opposite direction to the conveyance direction 5.

In this way, the state shown in FIG. 5 is achieved. By raising the lifting rake 10, the upper limit state shown in FIG. 58 is reached, and the steel A3
, A5 is turned by 63 degrees, and steel materials A2 and A4 are turned by 27 degrees.

Thereafter, the lifting rake 10 is set to the lower limit position, the positioning hydraulic cylinder 34 is contracted, and the lever 30 is moved to the turning angle position s.
5 to s2 and move the lifting rake 10 in the transport direction 5 to 3.
Move forward by the pitch to bring the state shown in FIG. 5 to 9. By raising the elevating rake 10, the steel materials A2 and A4 are turned by 63 degrees, and the steel materials A3 and A5 are turned by 27 degrees to the state shown in FIG. 5 and 10.

Next, the lifting rake 10 is set to the lower limit position, the lever 30 is set from the rotation angle position s2 to s4, and the lifting rake 10 is moved back by 2 pitches in the opposite direction to the conveying direction 5, resulting in the state shown in FIG. 5, 11. . Therefore, by raising the lifting rake 10 to the upper limit position as shown in FIG.
5 is rotated by 63 degrees, and steel materials A2 and A4 are rotated by 27 degrees.
Finally, by setting the lifting rake 10 to the lower limit position and returning the lever 30 from the rotational angle position s4 to sl, the lifting rake 10 is advanced by three pitches in the conveying direction 5 and returned to the state shown in FIG. 5.

Thereafter, the operations shown in Fig. 5 1 to 12 are repeated, and the steel materials AI to A
5 is conveyed while being rotated. FIG. 6 is a plan view of another embodiment of the present invention, FIG. 7 is a cross-sectional view of the same as seen from the side, and FIG. 8 is a cross-sectional view of FIG. It is.

In this embodiment, the same reference numerals are used for parts corresponding to the embodiments described in FIGS. 1, 4 and 5. Figures 1 to 5
A pair of lifting rakes corresponding to the lifting rake 0' in the embodiment shown in the figure and corresponding parts thereof are suffixed a, b.
The explanation will be omitted. The present conveyance device 1 is applied to a cooling bed or a heating furnace. A steel material A having a square cross section is conveyed in the direction of an arrow 3 by an entry roller table 2, and loaded onto a conveying device 1 by a receiving pusher transfer 4. The conveying device 1 transports the steel material A in the conveying direction 5.
During this process, steel material A is cooled or heated.
The cooled or heated steel material A is delivered to the delivery roller table 7 by the delivery chain transfer 6 and conveyed in the direction of the arrow 8. In the conveying device 1, the plurality of fixed rakes 9 are arranged parallel to the conveying direction 5 and at intervals in a direction perpendicular to the conveying direction 5 (left-right direction in FIG. 8).

Between the fixed rakes 9, a plurality of pairs of lifting rakes 10a and 10b are arranged parallel to the fixed rakes 9.
The driving means 60 for raising and lowering and horizontally moving the lifting rakes 10a and 10b is constructed as follows.

The lower part of the lifting key 10a is fixed to support beams 63, 64 via legs 61, 62. Support beams 63, 6
Rails 65 and 66 having guide surfaces horizontal in the conveyance direction are provided at the lower part of the conveyance direction. Similarly, the lifting rake 10b is fixed to support beams 69, 7 via legs 67, 68, and rails 71, 72 are fixed to support beams 69, 70.
will be provided. Rollers 73, 74, 75, 76 that support the guide surfaces of the rails 65, 66, 71, 72 are pivotally supported by both arms of Y-shaped levers 77, 78. The Y-shaped levers 77, 78 are connected to interlocking shafts 79, which are horizontally pivoted at fixed positions.
8 rivers are fixed. The lower ends of the Y-shaped levers 77 and 78 are pin-coupled to an interlocking rod 82, and the interlocking shaft 80 is rotated by a lifting hydraulic cylinder 84 via a drive lever 83. At the bottom of the lifting rakes 10a and 10b, there are fixed pieces 86,
87 is fixed. One end of the links 88 and 89 is the fixed piece 8
6.87 by pins 90 and 91, and the other end is commonly pivotally supported by a pin 93 above the pins 90 and 91 and rearward in the conveyance direction at the upper end of the lever bar 92. The lever 92 is fixed to a horizontally pivoted movement shaft 94 in a fixed position. The interlocking shaft 94 is rotated by a positioning hydraulic cylinder 96 via a lever 95. The positioning hydraulic cylinder 96 is constructed by vertically combining double-acting cylinders 97 and 98 that have the same axis. The rotation angle position sl of the lever 92 is the same as that of both cylinders 97 and 98.
When the lifting rakes 10a, 10b are at the forward limit in the conveyance direction 5 by reducing , s3 is the same as s2 when the lifting rakes 10a, 10b are at the backward limit by extending both cylinders 97, 98.
is the position when one of the cylinders 97, 98 is contracted and the other is extended, and the lifting rakes 10a, 10b are in the position corresponding to when they are at the center of the forward eye and the backward limit. The lifting rakes 10a, 10b have basically the same structure as the lifting rake 10 described in connection with FIGS. 1-5. According to the present invention, the lifting rakes 10a and 100 are arranged offset by two pitches of the V-shaped groove 36 in the conveying direction. The lifting means 60 keeps the lifting rakes 10a, 10b horizontal so that when one goes up, the other goes down, and when the lifting rakes 10a, 10b go up and down,
, 54b passes through the valley bottom 39 of the fixed rake 9, a trajectory 56a,
56b (see FIG. 9 1), the lifting rake 10
a and 10b are driven up and down.

The operation will be explained with reference to FIG. 9 of Table 2, Table 2, and also FIG. 7.

First, as shown in FIG. 9 1, move the lifting rakes 10a and 10b to the forward limit and at the same height position below the fixed rake 9 (
(hereinafter referred to as the neutral position). As shown in FIG. 7, the lever 92 is moved by the positioning hydraulic cylinder 96.
This is done by setting the rotation angle position sl to the rotation angle position sl, and adjusting the extension/contraction length of the lifting hydraulic cylinder 84 so that the lifting rake is in the neutral position. Steel materials AI and A2 are moved on the V-shaped groove 36 of fixed rake 9 at two pitch intervals, steel materials A2 and A3 are moved at three pitch intervals, and steel materials A3 and A4 are moved at two pitch intervals again. Next, as the lifting hydraulic cylinder 84 is further extended as shown in FIG. It rises while following the trajectory of.

During this rising process, the steel materials A1 and A3 rotate by 63 degrees, and then the steel materials A2 and A4 rotate by 27 degrees. At the same time, the other lifting rake 10b is lowered. In this way, the state shown in FIG. 92 is reached. Then, when the lifting hydraulic cylinder 84 is moved in a stripe manner, one lifting rake 10a goes down and the other lifting rake 10b goes up, resulting in the state shown in FIG. 9.

By raising the lifting rake 10b, first the steel materials A1 and A3
is rotated by 27 degrees, and then steel materials A2 and A4 are rotated by 63 degrees. The steel material AI is further turned 30 degrees for unloading, and transferred to the unloading roller table 7 by the unloading chain transfer 6.
will be paid out. The lifting rakes 10a and IQb are brought to the neutral position by the lifting hydraulic cylinder 84, and then the lever 92 is moved to the rotation angle position s by the positioning hydraulic cylinder 96.
3, the conditions shown in FIG. 7 3 and FIG. 9 4 are assumed.

At this time, a new steel material A5 is transferred to the downward fixed inclined surface 38 of the fixed rake 9 by the receiving pusher transfer 4. Steel materials A4 and A5 are exposed at three pitch intervals.
By setting the lever 92 to the rotation angle position s3, the elevating rakes 10a and 10b move back two pitches to reach the backward limit position. By further extending the lifting hydraulic cylinder 84 and setting the lifting rake 10a to the upper limit position, the steel material A
5 is turned 27 degrees, and the fixed rake 9 has an upward fixed forehead slope 3.
7 and the state shown in FIG. 9 is obtained.

Other steel materials A2 to A4 do not rotate. As shown in FIG. 9, the lifting hydraulic cylinder 84 is moved to the lifting rake 10a,
By setting 10b to the lower and upper limits,
Steel materials A3 and A5 are turned by 63 degrees, and steel materials A2 and A4 are turned by 27 degrees.
Rotate once.

The lifting rake 10a, 1 is moved by the lifting hydraulic cylinder 84.
0b is set to the neutral position, and then the lever 92 is set to the rotation angle position s2 by the positioning hydraulic cylinder 96, and the seventh
The state is as shown in FIGS. 4 and 9 and 7. Lifting rake 10a,
10b moves forward by one pitch in the transport direction 5 from the backward limit and is located at the center between the backward limit and the forward limit. The lifting hydraulic sill 84 is further extended to move the lifting rakes 10a and 10b to the ninth position.
As shown in Figure 8, the upper and lower limit positions are set, and steel materials A2 and A4 are
is rotated by 63 degrees, and steel materials A3 and A5 are rotated by 27 degrees.

The lifting hydraulic cylinder 84 is reduced to a lifting rake 10a,
10b is set as the lower limit and upper limit position as shown in FIG. 9, steel materials A3 and A5 are turned by 63 degrees, and steel materials A2 and A4 are turned by 27 degrees.

Finally, the lifting rake 10 is moved by the lifting hydraulic cylinder 84.
a, 10b are placed in the neutral position, the lever 92 is returned to the rotation angle position sl by the positioning hydraulic cylinder 96, and the seventh
Return to the state shown in FIGS. 1 and 9.

By repeating the above-described operations, the steel materials AI to A5 are conveyed while being rotated. In the embodiments described in connection with FIGS. 6 to 9, the alignment of the lifting rakes 10a and 10b in the conveying direction 5 can be performed at three positions sl, s2, and s3, which has the advantage that the operating cycle is shortened. There is.

Note that the driving trajectories 56, 56a, 56b of the lifting rakes 10, 10a, 10b driven by the driving means 11, 60
(See Fig. 4 and Fig. 9 1) at its upper limit position,
An angle 8 of about 0 degrees to about 15 degrees in the conveying direction 5 with respect to the vertical line
The links 28, 88,
The length of 89 and the vertical positions of pins 29, 31, 90, 91, 93, etc. may be selected.

According to the invention, the angle 0 is the upward fixed forehead slope 37,37
It must be smaller than the angle that a and 37b make with the horizontal plane (OS minus). It is Fig. 5 4, Fig. 9 2,
In the process of descending from the upper limit position shown in 3, the upward inclined surface 43
This is so that the outer surface of the steel material A can be lowered while being separated from the outer surface of the steel material A without being pressed backward in the conveying direction 5. Now, during the process in which the lifting rakes 10, 10a, 10b are ascending, the support step ends 54, 54a, 54b reach the upper limit position from the position corresponding to the valley bottom 39, that is, for example, regarding the lifting rakes 1 river. From the state of Fig. 5 2 to Fig. 5 3
The outer surface of the steel material A slides on the apex 40 of the fixed rake 9 in a line contact state until the state shown in FIG. 5 is reached.

That distance is indicated by the reference s in FIG. Steel material A
is moved in the conveying direction 5 by a distance s, it is ensured that the centroid G of the steel material A reaches ahead of the apex 40 in the conveying direction 5, so that the steel material A moves around the apex 40 due to its gravity. The action ensures a 63 degree turn. Therefore, even if the steel material A is relatively small, it can be conveyed by turning. As another embodiment of the invention,
The lifting rakes 10, 10a, 10b may be moved up and down by the drive means 11, 6 having other structures.

For example, the vertical trajectory of the lifting rakes 10, 10a, and 10b may be vertical, and 0=0 and s=0. As described above, according to the present invention, when the steel material is turned, a part of the steel material is always partially supported by the fixed rake, so that the strength of the lifting rake is increased to a level that can sufficiently support the weight of the entire steel material. Moreover, the power required to drive the lifting rake required to turn the steel material is relatively small, and therefore equipment costs and operating costs can be reduced.

Moreover, since the steel material is divided into two groups and each group is rotated with a time lag, it is possible to further reduce equipment and operating costs, and the impact force that acts on the fixed rake and lifting rake during rotation can be reduced. becomes smaller. Further, the lifting stroke of the lifting rake can be relatively small. Furthermore, by driving the pair of lifting rakes while shifting them in the transport direction, it is possible to simplify the operation control of each lifting rake and shorten the operating cycle.

[Brief explanation of drawings]

FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a sectional view taken along line m-m in FIG. 2, and FIG. FIG. 5 is a side view for explaining the operation, FIG. 6 is a plan view of another embodiment of the present invention, FIG. 7 is a sectional view seen from the side, and FIG. Figure 8 is a sectional view along the leg-leg line of Figure 71;
FIG. 9 is a side view for explaining the operation. 1... Conveying device, 5... Conveying direction, 9
...Fixed rake, 10, 10a, 10b...
... Lifting rake, 11,60... Drive means,
26, 84... Hydraulic cylinder for lifting, 34, 96.
...Hydraulic cylinder for positioning, 36...
・V-shaped groove, 37... Upward fixed slope, 38...
...Fixed downward slope, 39... Valley bottom, 40...
... Vertex, 41, 41a, 41b... First protrusion, 42, 42a, 42b... Second protrusion, 47,
47a, 47b... push part, 54, 54a, 54b...
...Support step end, 56, 56a, 56b. ...Trajectory, G...Figure D. Figure 3 Figure 8 Figure Ship chart N Ship map Dimension map Mountain hemp map Mountain ship map Mountain key map Boat map 〇 Ship map

Claims (1)

[Scope of Claims] 1. A fixed inclined surface facing downward in the conveying direction having an angle of inclination greater than the friction angle of the steel material but not exceeding 45 degrees, and a fixed inclined surface facing upward in the conveying direction having an inclination angle approximately equal to the inclined surface. A fixed rake in which V-shaped grooves consisting of inclined surfaces are continuously formed at equal pitches in the conveying direction, and a pushing part that contacts the steel material mounted on the downward fixed inclined surface at a position rearward in the conveying direction from its centroid. a second protrusion having a support step end contacting the lower edge of the steel material mounted on the upward fixed inclined surface;
and protrusions alternately in the conveying direction, and arranged so that the end portions of the support step and the pushing portion are in contact with the steel materials mounted at intervals of at least 3 and 2 pitches in the V-shaped groove of the fixed rake. In addition, a lifting rake whose vertical position is selected so that the end of the support step rotates the steel material before the pushing part when rising; An elevating rake type steel material rotary conveyor characterized by being equipped with a drive means that periodically moves up and down and horizontally, following a trajectory passing through the valley bottom of a fixed rake, and so that the end of the support stage and the pushing part alternately hit the steel material. Device. 2 Consists of a fixed inclined surface facing downward in the conveying direction and having an angle with the horizontal plane that is larger than the friction angle of the steel material but not exceeding 45 degrees, and a fixed inclined surface facing upward in the conveying direction and having an inclination approximately equal to the inclined surface. a fixed rake in which V-shaped grooves are continuously formed at equal pitches in the conveying direction; a first protrusion having a pushing part that contacts the steel material mounted on the downward fixed inclined surface at a position rearward in the conveying direction from its centroid; and second protrusions having support step ends contacting the lower edge of the steel material mounted on the upward fixed inclined surface, alternately in the conveying direction, and the support step ends and the pushing portion are connected to each other. At least three of the V-shaped grooves of the fixed rail
The upper and lower positions are selected such that the end of the support stage turns the steel material before the pushing part when rising, and the upper and lower positions are selected such that the steel material is rotated before the pushing part when rising. A pair of lifting rakes arranged two pitches apart from each other in a V-shaped groove, and the lifting rakes being kept horizontal so that when one goes up, the other goes down;
It is also characterized by comprising a driving means for periodically moving up and down and horizontally so that the end of the support step follows a trajectory that passes through the bottom of the fixed rake when going up and down, and the end of the support step and the pushing part alternately hit the steel material. Lifting rake type steel turning conveyance device.