JPS6138084B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a walking type steel material conveying device in a continuous cooling bed or a continuous heating furnace.

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. Conventional walking type steel material conveyance equipment uses a movable longitudinal member to simultaneously lift a large number of steel materials mounted on fixed beams in a cooling bed or heating furnace, move them a certain distance in the conveyance direction, and then transport them again. The movable longitudinal member is mounted on a fixed beam and is configured to periodically repeat a walking motion in which the movable longitudinal member returns to the position before being transported. If the weight of steel in the cooling bed or heating furnace increases, the mechanical strength of the fixed beams and movable longitudinal members must be improved, and in addition, the driving power of the movable longitudinal members must also be increased. The problem arises of increased costs. Such a problem also occurs when the workpiece feeding device of the transfer machine shown in Japanese Patent Publication No. 46-17668 is applied as described above for conveying steel materials.

Therefore, an object of the present invention is to improve the mechanical strength of movable longitudinal members such as movable beams and their driving members, and to suppress increases in driving power as much as possible, and to improve cooling or heating capacity (cooling or heating in a cooling bed or heating furnace). Weight of heated steel [ton]/cooling or heating time [hours])
An object of the present invention is to provide a steel material conveying device capable of conveying a large weight of steel material without reducing its performance.

The present invention includes a fixed beam that extends in the conveyance direction and has loading sections formed at equal pitches, and a movable longitudinal member that is installed in parallel with the fixed beam. Multiple low-level loading parts are formed at equal pitches,
Such a movable longitudinal member in which a plurality of low-level loading parts are arranged between the high-level loading parts, and the movable longitudinal member is moved up and down and horizontally moved by a natural number multiple of the above-mentioned 1 pitch to convey the steel material, The movement includes a lower limit position where the high loading part is below the fixed beam, a first upper limit position where only the high loading part is above the fixed beam and lifting the steel material only by the high loading part, and Select a second upper limit position above the first upper limit position in which the high loading part and the low loading part are above the fixed beam and the steel material is lifted by the high loading part and the low loading part. This is a walking-type conveyance device for steel materials, characterized in that it includes a walking drive means that enables the walking-type conveyance of steel materials.

FIG. 1 is a plan view of one embodiment of the present invention. The steel material conveyed from the entrance roller table 1 in the direction of arrow 2 is stopped when the tip of the steel material hits the stopper 3. The steel material stopped there is placed by the receiving transfer 4 on the conveying device 5 according to the invention. The transport device 5 is
The steel material is conveyed from left to right in FIG. 1, and the steel material is cooled or heated during the conveyance process. The cooled or heated steel material is delivered to the exit roller table 7 by the delivery transfer 6 and conveyed in the direction of arrow symbol 8. Several rollers 9 are provided at certain intervals in the conveying direction 2 of the entrance roller table 1.
is rotationally driven by an electric motor 10. The receiving transfer 4 has sprocket wheels 11,1
It has a chain 13 stretched between the two. The locking tool provided on this chain 13 is the roller table 1
The upper steel material is moved to the conveying device 5. The sprocket wheel 11 is fixed to the interlocking shaft 14,
This interlocking shaft 14 is connected to an electric motor 16 via a reducer 15.
driven by. The payout transfer 6 is
It has the same structure as the receiving transfer 4, and includes a pair of sprocket wheels 18, 19, a chain 23, an interlocking shaft 20 fixed to the sprocket wheel 19, a speed reducer 21, and an electric motor 22. . Further, the exit roller table 7 is configured similarly to the entrance roller table 1, and includes several rollers 24 provided at certain intervals in the conveyance direction 8.
and an electric motor 25 that drives the roller.

FIG. 2 is a simplified side view for explaining the operation of the transport device 5. FIG. The fixed beam 27 is provided with loading portions p1, p2, . . . , p10 at equal pitches in the longitudinal direction (horizontal direction in FIGS. 1 and 2). When the steel material to be cooled or heated is a round steel bar, these loading parts p1 to p10 form shallow V-shaped grooves to prevent the steel material from rolling.
The movable beam 28 has a loading portion p of the fixed beam 27.
Loading parts q1 to q9 are provided at the same pitch as 1 to p10. If these loading parts are also round steel bars, V
It forms a letter-shaped groove. These loading parts q1~q
Of 9, q2, q5, and q8 are high loading parts,
The remaining parts q1, q3, q4, q6, q7, and q9 are low loading parts. Between the high loading parts q2 and q5,
A plurality of (two in this embodiment) lower loading parts q3,
q4 is provided, and high loading parts q5, q
The same number of position loading parts q6 and q7 are provided between the 8 parts. A pair of wheels 29 are pivotally supported on the movable beam 28.

The driving means 30 for raising and lowering and horizontally moving the movable beam 28 is constructed as follows. A cam piece 32 is fixed to the lower part of a horizontal support base 31 that guides the wheels 29 of the movable beam 28. The cam piece 32 is supported by a roller 33 provided at a fixed position. The support stand 31 has a link 34
One end of the link 34 is pivotally supported, and another link 35 is pin-coupled to the other end of the link 34. Link 3
The other end of 5 is fixed to an interlocking shaft 36 which is horizontally supported at a fixed position. A swinging rod 37 is fixed to the interlocking shaft 36, and the swinging rod 37 is swung around the axis of the interlocking shaft 36 by a lifting hydraulic cylinder 38.

FIG. 3 is an enlarged side view for explaining the vertical height positions of the fixed beam 27 and the movable beam 28. The lifting hydraulic cylinder 38 is the second
When reduced as shown in FIG. 1, the roller 33 is at the cam position 32a of the cam piece 32, and therefore the movable beam 28 is at the lower limit position as shown in FIG. 3.

When the lifting hydraulic cylinder 38 is placed in the intermediate position as shown in FIG. 3 shown in Figure 2. This position of the movable beam 28 will hereinafter be referred to as the first upper limit position.

When the lifting hydraulic cylinder 38 is extended as shown in FIG. 4, which will be described later, the cam position 32 of the cam piece 32 is
c is on the roller 33, and at this time the fixed beam 2
The relative vertical positional relationship between 7 and the movable beam 28 is as follows:
The result will be as shown in Fig. 3. This position of the movable beam 28 is hereinafter referred to as the second upper limit position.

In FIG. 3, reference h indicates the movable beam 28
It shows the difference in height in the vertical direction between a high-level loading section, for example, q2, and a low-level loading section, for example, q1. Reference numeral c indicates the high loading portion q2 at the lower limit of the movable beam 28 and the loading portion p1 of the fixed beam 27 as shown in FIG.
This is the vertical distance from p10. Reference numeral d indicates the lower loading portion q1 at the first upper limit position of the movable beam 28.
and the vertical distance between the loading parts p1 to p10 of the fixed beam 27. Reference numeral e indicates the first
This is the distance between the high-level loading portion q2 at the limit position and the loading portions p1 to p10 of the fixed beam. reference mark f
is the second position of the movable beam 28 as shown in FIG.
This is the distance between the lower loading portion q1 at the upper limit position and the loading portions p1 to p10 of the fixed beam 27. Reference symbol s is the difference between the high-level loading portion at the second upper limit position of the movable beam 28 and the lower limit position, and represents the total length of elevation.

From Figure 33 1 and Figure 3 2 h=d+e...(1) Also from Figure 3 1 and Figure 3 3 s=c+f+h…(2) becomes.

Here, if c=d and f=e, then from equations (1) and (2), s=d+e+h=2h...(3) h=1/2s...(4).

In other words, the high loading part q2 of the movable beam 28
The height h between the movable beam 28 and the lower loading part q1 is
It is sufficient to set it to half of the total length of the lift.

In the driving means 30, the horizontal movement of the movable beam 28 is caused by a link 40 whose one end is connected to a link 41.
It is done through. The other end of the link 41 is fixed to an interlocking shaft 42 which is pivotally supported at a fixed position. One end of a swinging rod 43 is fixed to this interlocking shaft 42, and a hydraulic cylinder 44 for horizontal movement is attached to the swinging rod 43.
can be connected with a pin.

The operation will be explained with reference to FIG. 2. In the standby state shown in FIG. 1, the loading portion p of the fixed beam 27
2. Steel material A1 is used for p3, p5, p6, p8, and p9.
-A6 are on board. Therefore, when the lifting cylinder 38 is driven to extend and the movable beam 28 is brought to the first upper limit position as shown in FIG.
1, A3, and A5 are the high-level loading parts q of the movable beam 28
2, q5, and q8. In this state, as shown in Fig. 2, the horizontal movement hydraulic cylinder 44
is extended to move the movable beam 28 to the loading parts p1 to p1.
By moving the steel materials A1, A3, and A5 by one pitch from 0, q1 to q9 in the conveying direction 45, the steel materials A1, A3, and A5 are conveyed by one pitch. Therefore, as shown in FIG. 2, by reducing the lifting hydraulic cylinder 38 and lowering the movable beam 28, the steel materials A1, A
3, A5 is the loading part p1, p4 of the fixed beam 27,
It will be loaded on board p7. Similarly, steel materials A2, A4,
A6 is also conveyed by one pitch and becomes in the state shown in FIG. 25. At this time, the steel material A7 is transferred from the entry side low table 1 to the loading section p1 by the receiving transfer 4.
Put it on 0. Further, the steel material A1 is transferred onto the delivery side roller table 7 by the delivery transfer 6. Then, the horizontal movement hydraulic cylinder 44 is contracted to position the high loading portion q8 of the movable beam 28 on the loading portion p10 of the fixed beam 27 closest to the entrance roller table 1 side, as shown in FIG. Therefore, as shown in FIG. 2, the lifting hydraulic cylinder 38 is extended to raise the movable beam 28 to the first upper limit position.
The hydraulic cylinder 38 for lifting and lowering and the hydraulic cylinder 44 for horizontal movement are driven alternately to move the steel materials A3, A5, A7.
is transported one pitch in the transport direction 45 by the movable beam 28. In this way, the steel materials A1 and A2 of the first group G1 and the steel materials A of the second group G2
3, A4 and third group G3 steel materials A5, A
Steel material A located at the front of 6 in the conveying direction
1, A3, and A5 are moved by one pitch by the movable beam 28, and then the first to third
Steel materials A2, A4, and A6 located at the rear of groups G1 to G3 in the transport direction are moved by one pitch.
In this way, the steel materials A1 to A6 mounted on the fixed beam 27 are moved in two groups, so there is no need to significantly improve the mechanical strength of the movable beam 28, the support base 31, etc. The outputs of the lifting hydraulic cylinder 38 and the horizontal movement hydraulic cylinder 44 do not need to be increased either.

FIG. 4 is a diagram for explaining the operation for moving the steel materials A1 to A9 all at once by the conveying device described in FIGS. 1 to 3. FIG. As shown in FIG. 41, move the movable beam 28 in the standby position as shown in FIG.
As shown in the figure, the lifting hydraulic cylinder 38 is driven to extend and is lifted to the second upper limit position, whereby A1 to A9 loaded on the loading parts p2 to p10 of the fixed beam 27 are lifted all at once by the movable beam 28. lift it up. Next, as shown in FIG. 4, the horizontal movement hydraulic cylinder 44 is extended to move these movable beams 28 one pitch in the conveyance direction 45. As shown in FIG. 4, the lifting hydraulic cylinder 38 is reduced so that the movable beam 28 is at the lower limit position, and
9 is mounted on the loading parts p1 to p9 of the fixed beam 27. Then, as shown in FIG. 4, the movable beam 28
The horizontal movement hydraulic cylinder 44 is contracted so as to move one pitch in the direction opposite to the conveying direction 45, that is, in the direction of the entrance table 1, and is returned to the standby position as shown in FIG. 41.

FIG. 5 shows another embodiment of the invention. Figure 5 1
As shown in FIG.
Loading parts p1 to p13 are formed for loading steel materials A6 and A7 to A9 of the third group G3.
Loading parts q1 to q12 are formed on the movable beam 48. Among these loading parts q1 to q12, three lower loading parts q3, q4, q5 and q7, q8, q9 are formed between the higher loading parts q2, q6, q10, respectively. The steel materials A1 to A9 are divided into three groups G1 to G3, and one loading portion p5 is provided between the steel materials A1, A2, A3 of the first group G1 and the steel materials A4, A5, A6 of the second group. Similarly, there is one loading part p between the steel materials A4, A5, A6 of the second group G2 and the steel materials A7, A8, A9 of the third group.
9 is open. As shown in FIG. 5, when the movable beam 48 is in the standby position, the steel members A1 to A9
When transporting the group into three groups, the movable beam 48 is raised to the first upper limit position as shown in FIG. 45 frontmost steel material A
1, A4, A7 as high loading parts q2, q6, q10
horizontally moving hydraulic cylinder 44
The steel materials A1, A4, and A7 are moved by one pitch in the conveying direction 45 to the state shown in FIG. It descends as shown in Figure 4 and ends the conveyance.

Continue with steel materials A2 and A of each group G1 to G3.
5 and A8 are conveyed one pitch in the conveyance direction 45 by alternately driving the hydraulic cylinders 38 and 44, and then the steel materials A3, A6, and A9 at the rearmost along the conveyance direction of each group G1 to G3 are conveyed one pitch. Move in a pinch. In this way, each group G1 to G3
The steel materials A1 to A9 are divided into three parts and moved.

FIG. 6 shows that steel materials A1 to A12 mounted on a fixed beam 47 are transferred to a movable beam 47 by a conveying device according to the present invention having the structure shown in FIG.
8 is a drawing showing the operation when conveying one pitch at a time using a roller. 6.2 by the lifting hydraulic cylinder 38 in the standby position as shown in FIG. 6.1.
The movable beam 48 is moved to the second upper limit position as shown in FIG.
The steel materials A1 to A12 are lifted all at once by the hydraulic cylinder 4 for horizontal movement as shown in FIG. 6.
4, the movable beam 48 is moved 1 in the transport direction 45.
Then, as shown in FIG. 6, the movable beam 48 is lowered to the lower limit position by the lifting hydraulic cylinder 38. By repeating such operations, the steel materials A1 to A12 can be conveyed one pitch at a time.

FIG. 7 shows another embodiment of the invention. In this embodiment, the fixed beam 50 has loading parts p1 to p10 of steel materials A1 to A6 at equal pitches. Fixed beam 5
There are sprocket wheels 51, 52 on both end sides of 0.
is provided. One sprocket wheel 52
is driven by a drive source 54 including a speed reducer and an electric motor. These sprocket wheels 51,
A movable chain 55 is stretched between the parts 52. The drive source 54 can move the chain 55 in the transport direction 45 and the opposite direction. The chain 55 is a so-called link chain, and the outer links 5
6 and the inner link 57 are pin-coupled to each other. The chain 55 has loading parts q1 to q9. Among these loading parts q1 to q9, q2, q5, and q8 are higher loading parts, and the remaining parts q1, q3, q4, and q
6, q9 is a lower loading part. High loading part q2,
Between q5 and q8, there are lower loading parts q3, q4, q
6, q7, q9, and q10 are provided, and the movable chain 55 is formed in an endless shape. chain 5
The upper part, which is the tensile side of 5, is supported by a support base 63. A guide rod 64 extending downward is fixed to this support base 63. The guide rod 64 is guided in the vertical direction by the guide member 58. The upper ends of levers 59 and 60 abut against the lower part of the support base 63, and these levers 59 and 60 are pivoted at fixed positions, and their lower ends are connected to a connecting rod 61 with a pin. The connecting rod 61 is a hydraulic cylinder 62 for lifting and lowering.
The horizontal displacement is adjusted by .

As shown in FIG. 7, the lifting hydraulic cylinder 62 is contracted and the support base 63 is placed on standby at the lower limit position. Therefore, the lifting hydraulic cylinder 62 is extended,
The support base 63 and therefore the upper part of the movable chain 55 are set at the first upper limit position as described in FIG. 32. At this first upper limit position, the high loading parts q2, q
Steel materials A1, A3, and A5 are lifted by 8 and q8. Then, the chain 55 is moved by one pitch in the conveying direction 45 by the drive source 54, and this state is shown in FIG. 7. Next, the cylinder 64 is reduced, and the support base 63 and therefore the upper part of the chain 55 are lowered, resulting in the state shown in FIG. 7, and the steel materials A1, A3,
A5 is the loading part p1, p4, p of the fixed beam 50
It will be loaded on board 7. Therefore, as shown in FIG.
It is placed at the position of loading portion p10 of 0. Then, the lifting hydraulic cylinder 62 is driven, and the upper part of the chain 55 is raised to the first upper limit position as shown in FIG. These steel materials A
3, A5, and A7 are transported one pitch. In this way, the steel materials A1 to A7 on the fixed beam 50 are
It is divided into two groups and transported one pitch at a time.

FIG. 8 is a diagram illustrating the operation when the steel materials on the fixed beam 50 are lifted and moved by the chain 55 all at once by a conveying device having the same structure as that shown in the embodiment of FIG. 7. It is. The chain 55 in the standby position as shown in FIG. 81 is moved to the second upper limit position by driving the lifting hydraulic cylinder 62, and as a result, the chain 55 is fixed as shown in FIG. 82. Steel materials A1 to A9 on the beam 50
is lifted. Next, as shown in FIG.
Then, as shown in FIG. 8, the lifting hydraulic cylinder 62 is contracted to lower the support base 63, and the steel materials A1 to A9 are mounted on the fixed beam 50 again. Therefore, as shown in FIG. 8, a new steel material A10 is placed on the fixed beam 50 by the receiving transfer 4, and the steel material A1 is transferred onto the discharge roller table 7 by the discharging transfer 6.
Then, the steps of FIG. 81 to FIG. 85 are repeated again.

FIG. 9 shows still another embodiment of the present invention,
This embodiment is similar to the embodiments shown in FIGS. 7 and 8, but it should be noted that the sprocket wheel 5
Three lower loading parts q3, q4, q5, q7, q8, and q9 are formed between the higher loading parts q2, q6, and q10 of the chain 67 stretched between the chain 67 and the lower loading parts q3, q4, q5, q7, q8, and q9. The first group G1 is placed on the fixed beam 50.
steel materials A1, A2, A3 and steel materials A4, A5, A6 of the second group G2 are loaded, and between the steel materials A1 to A3 and A4 to A6 of these groups, 1
A loading section p5 on which two steel materials are to be loaded is opened. According to this embodiment, after the steel materials A1 and A4 in the front of each group in the transport direction are moved one pitch, the steel materials A2 and A5 are then moved one pitch, and subsequently the steel materials A3 and A6 are moved one pitch. . In this way, the steel materials A1 to A6 on the fixed beam 50 can be divided into three groups and moved. In addition, the chain 67 is operated by the lifting hydraulic cylinder 62.
By moving the upper part of to the second upper limit position,
The steel materials A1 to A7 on the fixed beam 50 can also be moved all at once.

In the above-described embodiment, a high loading portion (q in FIG.
2, q5, q8, q2, q6, q10 in Figure 5,
q2, q5, q8 in Figure 7, q2, q in Figure 9
6, q10) is formed to carry a single steel material, but as another embodiment of the present invention, the first
As shown in Figure 0, the outer link 70 and the inner link 71
Each loading section of the chain 72 consists of
5 may be configured to carry a plurality of steel materials (2 in the figure).

As described above, according to the present invention, the movable longitudinal member is provided with a high loading section and a low loading section, and the steel material can be divided into multiple parts and transported by the high loading section and the narrow loading section provided on the fixed beam. . The case where this is applied to a cooling bed or a heating furnace is as follows. As the weight of each piece of steel supplied to the cooling bed or heating furnace increases, it is necessary to lengthen the cooling or heating time, which creates time for multiple divisions of conveyance and maintains the cooling or heating capacity. be able to. In addition, the total weight of steel materials in the cooling bed or heating furnace increases, but by transporting this increased weight of steel materials in multiple parts,
It is possible to improve the mechanical strength of a movable longitudinal member such as a movable beam and to suppress an increase in equipment costs. Further, according to the present invention, it is also possible to convey all the steel materials at once by the high loading section and the low loading section of the movable longitudinal member and the loading section of the fixed bibeam, and the conveying device according to the present invention can be used in a wide range of applications. can be used.

[Brief explanation of the drawing]

1 is a plan view of one embodiment of the present invention, FIG. 2 is a simplified side view of the embodiment of FIG. 1, and FIG. 3 is an enlarged side view of the fixed beam 27 and movable beam 28 of FIG. 2. , FIG. 4 is a side view for explaining the operation of FIGS. 1 to 3, FIG. 5 is a simplified side view of another embodiment of the present invention, and FIG. 6 is a side view of the embodiment shown in FIG. 7 is a side view of another embodiment of the present invention, FIG. 8 is a side view of another embodiment of the present invention, FIG. 8 is a side view of another embodiment of the present invention, and FIG. 9 is a side view of another embodiment of the present invention. FIG. 10 is a side view of a part of a chain 70 of still another embodiment of the present invention, and FIG. 10 is a plan view of the chain 70. DESCRIPTION OF SYMBOLS 1... Input side roller table, 4... Acceptance transfer, 5... Conveyance device, 6... Output transfer, 7... Output side roller table, 27, 47
...Fixed beam, 28,48...Movable beam, 3
0... Drive means, 55, 67, 76... Chain,
p1 to p10, q1 to q10... Loading section.

Claims (1)

[Scope of Claims] 1. A fixed beam extending in the conveyance direction and having loading portions formed at equal pitches, and a movable longitudinal member installed in parallel with the fixed beam, comprising a plurality of high loading portions and a plurality of high loading portions. A movable longitudinal member, in which a plurality of low loading parts lower than the lower loading parts are formed at equal pitches, and a plurality of low loading parts are arranged between the higher loading parts; The steel material is conveyed by horizontal movement of a natural number multiple of 1 pitch, and the vertical movement is carried out at a lower limit position where the high loading part is below the fixed beam, and at a lower limit position where only the high loading part is above the fixed beam. a first upper limit position in which the steel material is lifted only by the high-level loading section; and a first upper limit position in which the high-level loading section and the low-level loading section are located above the fixed beam, and the steel material is lifted by the high-level loading section and the low-level loading section. A walking-type conveyance device for steel materials, comprising: a walking drive means that makes it possible to select a second upper limit position above the first upper limit position for lifting.