CN113145661B - Inlet channel for bar finish rolling and use method thereof - Google Patents
Inlet channel for bar finish rolling and use method thereof Download PDFInfo
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- CN113145661B CN113145661B CN202110294379.1A CN202110294379A CN113145661B CN 113145661 B CN113145661 B CN 113145661B CN 202110294379 A CN202110294379 A CN 202110294379A CN 113145661 B CN113145661 B CN 113145661B
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- main body
- long chute
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/14—Guiding, positioning or aligning work
- B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass
- B21B39/165—Guides or guide rollers for rods, bars, rounds, tubes ; Aligning guides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
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Abstract
The invention relates to an inlet channel for bar finish rolling and a using method thereof, wherein the inlet channel comprises a base, a channel main body and a height adjusting device, wherein the channel main body is arranged above the base; the channel main body comprises a long sliding chute and a horn-shaped guide inlet, the guide inlet is communicated with the long sliding chute, guide rollers are arranged at the upper end and the lower end of the guide inlet, the guide rollers are positioned at the connecting part of the guide inlet and the long sliding chute, an openable main baffle is arranged at the top of the long sliding chute, one side of the main baffle is hinged with the long sliding chute, a plurality of openings are formed in the main baffle, and a horn-shaped floating head prevention baffle is arranged above the openings; the height adjusting device comprises worm and gear mechanisms positioned at two ends of the bottom of the base, and the output end of the worm and gear mechanism is connected with the base. The height of the channel main body is adjusted through the height adjusting device, the main baffle of the channel main body is of a hinged structure, the abrasion condition of the bottom in the channel main body can be observed conveniently, and the channel main body is simple in structure and convenient to use.
Description
Technical Field
The invention relates to the technical field of finish rolling, in particular to an inlet channel for finish rolling of bars and a using method thereof.
Background
When rolling large-sized steel, a plurality of frames of a rolling mill in a finish rolling area are empty, so that a roller is not required to be installed, but the rolled steel needs to be righted by using an inlet channel when the rolled steel passes through the rolling mill, so that the rolled steel is smoothly fed into a next rolling mill, and therefore, the rolled steel is imported. Among the prior art, the inlet channel of rod finish rolling is formed by the welding of multistage short channel, but the interface at two sections short channels of welding department is difficult to align, the condition that step or sunken has appeared easily in the welding, can be because the arch of kneck is by the fish tail when steel reachs the kneck, the long inlet channel who also has the adoption integral type now, but because the length of steel is longer, the condition of drift appears easily at steel entering inlet channel's in-process, the one end perk of steel promptly, steel has probably to block in inlet channel, also damage inlet channel's inner wall, after long-term the use, the pit of inlet channel inner wall can be bigger and bigger, steel is blocked more easily, therefore, need to propose a neotype inlet channel and solve above-mentioned problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an inlet channel for bar finish rolling and a using method thereof.
The technical purpose of the invention is realized by the following technical scheme:
an inlet channel for bar finish rolling comprises a base, a channel main body and a height adjusting device, wherein the channel main body is arranged above the base, the height adjusting device is arranged below the base, and the height adjusting device adjusts the height of the base;
the channel main body comprises a long sliding groove and a horn-shaped guide inlet, the guide inlet is communicated with the long sliding groove, guide rollers are arranged at the upper end and the lower end of the guide inlet, the guide rollers are flush with the inner wall of the long sliding groove, the guide rollers are positioned at the connecting part of the guide inlet and the long sliding groove, a main baffle capable of being opened and closed is arranged at the top of the long sliding groove, one side of the main baffle is hinged with the long sliding groove, a plurality of openings are formed in the main baffle, and a horn-mouth-shaped float-preventing baffle is arranged above the openings; the height adjusting device comprises worm and gear mechanisms positioned at two ends of the bottom of the base, and the output end of the worm and gear mechanism is connected with the base.
In one embodiment, a fixing portion for fixing the long chute is arranged in the middle of the base, the fixing portion is provided with a first fixing screw hole, a second fixing screw hole matched with the first fixing screw hole is arranged in the middle of the long chute, a fixing bolt is screwed into the first fixing screw hole and the second fixing screw hole to fixedly connect the base and the long chute, an adjusting screw is arranged at one end, away from the guide inlet, of the base, and is rotatably connected with the base, a fixing nut matched with the adjusting screw is arranged at one end, away from the guide inlet, of the long chute, and the adjusting screw is in threaded connection with the fixing nut to adjust the height of the long chute. The height adjusting device coarsely adjusts the height of the channel main body, the height of the channel main body is finely adjusted through the matching of the adjusting screw rod and the fixing nut, and the relative position between the adjusting screw rod and the fixing nut is changed through rotating the adjusting screw rod, so that the height of the long chute is adjusted.
In one embodiment, the fixing portion is vertically provided with a plurality of first fixing screw holes. Can select the first fixed screw of co-altitude not according to the different high demands of long spout, then through fixing bolt with fixed part and long spout fixed connection.
In one embodiment, the adjusting screw is fixedly provided with a hexagonal nut which is convenient to screw, and the hexagonal nut is positioned between the base and the fixed nut. The height fine adjustment of the long sliding groove is realized by screwing the hexagon nut.
In one embodiment, the top surface of the main baffle is provided with a plurality of flap handles. The main baffle is convenient for observe the inside condition of long spout for the structure that opens and shuts, and inside the long spout of the clearance of being convenient for, also be convenient for in time discover the inside unusual of long spout, in time change the long spout of damage.
In one embodiment, the long chute is provided with a pressing part for pressing the main baffle, the pressing part is located at the hinged position of the main baffle and the long chute, the pressing part comprises a pressing support, a pressing head and a return spring, the pressing support is fixedly connected with the side face of the long chute, the pressing head is hinged to the pressing support, the return spring is arranged at the hinged position of the pressing head and the pressing support, and the pressing head is in contact with the main baffle.
In one embodiment, two sides of the long chute are respectively provided with a hook for conveniently hoisting the long chute. When the long sliding groove needs to be replaced, the long sliding groove is separated from the base, the steel wire rope of the crown block is hung at the lifting hook, the channel main body needing to be replaced is lifted out, then the new channel main body is lifted to the base, and the new channel main body is fixed with the base.
In one embodiment, the side surface of the long chute is provided with a cooling water pipe. When the steel passes through the long chute, the temperature of the long chute rises, and the cooling water pipe continuously feeds cold water to cool the long chute.
In one embodiment, the height adjusting device further comprises a bottom plate, the two worm and gear mechanisms are arranged on the bottom plate, and a guide wheel is arranged at the bottom of the bottom plate. The position of the inlet channel can be adjusted by pushing the bottom plate, and the use of the crown block is reduced.
A using method of an inlet channel for bar finish rolling comprises the following steps:
adjusting the height of the channel body: adjusting the worm gear mechanism to initially align the guide inlet with the outlet of the previous rolling mill and initially align the outlet of the long chute with the inlet of the next rolling mill; then, an adjusting screw rod on the base is rotated, the middle of the long sliding chute is connected with a fixing part of the base through a fixing bolt, so that the long sliding chute rotates around the fixing bolt, the height of one end of an outlet of the long sliding chute is adjusted, a guide inlet is completely aligned with an outlet of a previous rolling mill, the outlet of the long sliding chute is completely aligned with an inlet of a next rolling mill, and finally the adjusting screw rod and the fixing bolt are fixed to complete the adjustment of the height of the channel main body;
straightening steel: when steel enters the channel main body from a previous rolling mill, the horn-shaped guide inlet and the guide roller quickly correct the direction of the steel entering the channel main body, so that the steel enters the long chute, the steel is longer and can float in the long chute, the head end of the tilted steel passes through one of the openings and is in contact with the anti-floating baffle plate at the opening, the anti-floating baffle plate is horn-shaped, the head end of the steel returns to the long chute again under the guide effect of the anti-floating baffle plate, when the position of the steel floating head is the main baffle plate between the two openings, the head end of the steel pushes up the main baffle plate, and the steel of the floating head returns to the long chute again under the effect of the pressing part of the main baffle plate;
in the process that the steel passes through the channel main body, cold water is continuously introduced into the cooling water pipe on the side face of the long chute, so that the temperature of the long chute is reduced;
replacing the channel main body: when the bottom of the long chute is seriously abraded or the specification of steel is changed, feeding is stopped, the crown block is connected with the hook through a steel wire rope to stabilize the position of the channel main body, then the fixing bolt at the fixing part is removed, the adjusting screw rod is rotated to separate the base from the long chute, the channel main body is continuously and slowly lifted until the adjusting screw rod is separated from the long chute in the process of rotating the adjusting screw rod, then the new channel main body is lifted above the base, the adjusting screw rod is in threaded connection with the fixing nut of the new channel main body, the adjusting screw rod is rotated to connect the long chute of the new channel main body with the base, meanwhile, the new channel main body is continuously lowered, then the fixing part is connected with the long chute through the fixing bolt at a proper height, the steel wire rope of the crown block is loosened to complete the replacement of the channel main body, and then the height of the channel main body is adjusted.
In conclusion, the invention has the following beneficial effects:
the invention has simple structure and convenient use, and comprises a base, a channel main body and a height adjusting device, wherein the channel main body is detachably connected with the base, so that the channel main body with serious abrasion is convenient to replace;
the horn-shaped guide inlet of the channel main body and the guide roller at the guide inlet have the function of quickly correcting the direction of the steel, the top of the long chute of the channel main body is provided with the openable main baffle plate, so that the abrasion condition in the long chute can be observed conveniently, the main baffle plate is provided with a plurality of openings and the anti-floating head baffle plate, the anti-floating head baffle plate guides the head end of the tilted steel into the long chute, and the problem that the steel floats in the channel main body is effectively solved;
the long chute and the guide inlet are integrated, the guide roller is arranged at the connecting part of the long chute and the guide inlet and is flush with the inner wall of the long chute, so that the problem that steel materials are scratched when passing through the channel main body is effectively solved, and the problem that the steel materials are stacked due to the fact that the steel materials tilt in the channel main body is effectively solved by the main baffle plate and the anti-floating baffle plate of the long chute.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic view of a channel body of the present invention;
fig. 4 is a schematic view of a pilot inlet of the present invention.
In the figure: 1-base, 2-guide inlet, 3-long chute, 4-guide roller, 5-worm gear mechanism, 6-main baffle, 7-floating head prevention baffle, 8-fixing part, 9-first fixing screw hole, 10-fixing bolt, 11-adjusting screw rod, 12-turning plate handle, 13-hook, 14-bottom plate, 15-guide wheel, 16-second fixing screw hole, 17-fixing nut and 18-pressing part.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
It should be noted that all the directional terms such as "upper" and "lower" referred to herein are used with respect to the view of the drawings, and are only for convenience of description, and should not be construed as limiting the technical solution.
As shown in fig. 1 to 4, the present invention provides an inlet channel for bar finish rolling, comprising a base 1, a channel body disposed above the base 1, and a height adjusting device disposed below the base 1, the height adjusting device adjusting the height of the base 1;
the channel main body comprises a long chute 3 and a horn-shaped guide inlet 2, the guide inlet 2 is communicated with the long chute 3, guide rollers 4 are arranged at the upper end and the lower end of the guide inlet 2, the guide rollers 4 are positioned at the connecting part of the guide inlet 2 and the long chute 3, a main baffle 6 which can be opened and closed is arranged at the top of the long chute 3, one side of the main baffle 6 is hinged with the long chute 3, a plurality of openings are formed in the main baffle 6, and a horn-mouth-shaped float-preventing baffle 7 is arranged above the openings; the height adjusting device comprises worm and gear mechanisms 5 positioned at two ends of the bottom of the base 1, and the output ends of the worm and gear mechanisms 5 are connected with the base 1.
In this embodiment, the centre of base 1 is provided with fixed part 8 of fixed long spout 3, fixed part 8 is provided with first fixed screw 9, the centre of long spout 3 be provided with the fixed screw 16 of the first fixed screw 9 complex second, the fixed bolt 10 screw in first fixed screw 9 and the fixed screw 16 of second are with base 1 and long spout 3 fixed connection, the one end of keeping away from direction entry 2 of base 1 is provided with adjusting screw 11, adjusting screw 11 and base 1 rotatable coupling, the one end of keeping away from direction entry 2 of long spout 3 is provided with adjusting screw 11 complex fixation nut 17, adjusting screw 11 and fixation nut 17 threaded connection, the height of adjustment long spout 3. The height adjusting device is used for roughly adjusting the height of the channel main body, the height of the channel main body is finely adjusted by matching the adjusting screw rod 11 with the fixing nut 17, and the relative position between the adjusting screw rod 11 and the fixing nut 17 is changed by rotating the adjusting screw rod 11, so that the height of the long chute 3 is adjusted.
Further, the fixing portion 8 is vertically provided with a plurality of first fixing screw holes 9. The first fixing screw holes 9 with different heights can be selected according to different height requirements of the long chute 3, and then the fixing part 8 is fixedly connected with the long chute 3 through the fixing bolts 10.
Further, a hexagonal nut convenient to screw is fixedly arranged on the adjusting screw 11, and the hexagonal nut is located between the base 1 and the fixing nut 17. The height fine adjustment of the long chute 3 is realized by screwing the hexagon nut.
Further, the top surface of the main baffle 6 is provided with a plurality of flap handles 12. The main baffle 6 is convenient for observe the inside condition of the long chute 3 for the opening and closing structure, is convenient for clear up the inside of the long chute 3, is also convenient for discover the abnormality inside the long chute 3 in time, and replaces the damaged long chute 3 in time.
Further, the long chute 3 is provided with a pressing part 18 for pressing the main baffle 6, the pressing part 18 is located at the hinged position of the main baffle 6 and the long chute 3, the pressing part 18 comprises a pressing support, a pressing head and a reset spring, the pressing support is fixedly connected with the side face of the long chute 3, the pressing head is hinged to the pressing support, the reset spring is arranged at the hinged position of the pressing head and the pressing support, and the pressing head is in contact with the main baffle 6. The long chute 3 is articulated with the main baffle 6 and is connected, consequently, when steel got into long chute 3, when the drift appears in steel, can be with 6 jack-ups of main baffle, because the articulated department of main baffle 6 and long chute 3 is provided with resettable portion 18 that compresses tightly, main baffle 6 can not by jack-up completely, the portion 18 that compresses tightly both can fix main baffle 6 and can not be backed down in long chute 3 department, also play the effect of unloading, reset spring absorbs the force that steel applied to main baffle 6, main baffle 6 is damaged by steel after long-term the use problem has been solved effectively, the life of extension main baffle 6.
Furthermore, the two sides of the long chute 3 are respectively provided with a lifting hook which is convenient for lifting the long chute 3. When the long chute 3 needs to be replaced, the long chute 3 is separated from the base 1, the steel wire rope of the crown block is hung at the lifting hook, the channel main body needing to be replaced is lifted out, then a new channel main body is lifted to the base 1, and the new channel main body is fixed with the base 1.
Further, a cooling water pipe is arranged on the side surface of the long chute 3. When the steel passes through the long chute 3, the temperature of the long chute 3 rises, and the cooling water pipe continuously feeds cold water to cool the long chute 3.
Further, the height adjusting device further comprises a bottom plate 14, the two worm and gear mechanisms 5 are arranged on the bottom plate 14, and guide wheels 15 are arranged at the bottom of the bottom plate 14. The position of the inlet passage can be adjusted by pushing the bottom plate 14, reducing the use of overhead travelling cranes.
A method for using an inlet channel for bar finish rolling comprises the following steps:
adjusting the height of the channel body: adjusting the worm gear mechanism 5 to initially align the guide inlet 2 with the outlet of the previous rolling mill and initially align the outlet of the long chute 3 with the inlet of the next rolling mill; then, the adjusting screw 11 on the base 1 is rotated, and the middle of the long chute 3 is connected with the fixing part 8 of the base 1 through the fixing bolt 10, so that the long chute 3 rotates around the fixing bolt 10, the height of one end of the outlet of the long chute 3 is adjusted, the guide inlet 2 is completely aligned with the outlet of the previous rolling mill, the outlet of the long chute 3 is completely aligned with the inlet of the next rolling mill, and finally, the adjusting screw 11 and the fixing bolt 10 are fixed to complete the adjustment of the height of the channel main body;
righting the steel: when steel enters a channel main body from a previous rolling mill, a horn-shaped guide inlet 2 and a guide roller 4 quickly correct the direction of the steel entering the channel main body, so that the steel enters a long chute 3, because the length of the steel is long, the steel can float in the long chute 3, because a plurality of openings are formed in a main baffle 6, the head end of the tilted steel penetrates through one of the openings and is in contact with a float-preventing baffle 7 at the opening, the float-preventing baffle 7 is horn-shaped, the head end of the steel returns to the long chute 3 again under the guide effect of the float-preventing baffle 7, when the position of the float of the steel is the main baffle 6 between the two openings, the head end of the steel jacks the main baffle 6, and the main baffle 6 returns the steel of the float to the long chute 3 again under the effect of a pressing part 18;
in the process that the steel passes through the channel main body, cold water is continuously introduced into a cooling water pipe on the side surface of the long chute 3, so that the temperature of the long chute 3 is reduced;
replacing the channel main body: when the bottom of the long chute 3 is seriously worn or the specification of steel is changed, feeding is stopped, a crown block is connected with a hook 13 through a steel wire rope to stabilize the position of the channel main body, then a fixing bolt 10 at the fixing part 8 is removed, the adjusting screw 11 is rotated to separate the base 1 from the long chute 3, the channel main body is continuously and slowly lifted until the adjusting screw 11 is separated from the long chute 3 in the process of rotating the adjusting screw 11, then a new channel main body is lifted above the base 1, the adjusting screw 11 is in threaded connection with a fixing nut 17 of the new channel main body, the adjusting screw 11 is rotated to connect the long chute 3 of the new channel main body with the base 1, meanwhile, the new channel main body is continuously lowered, then the fixing part 8 is connected with the long chute 3 through the fixing bolt 10 at a proper height, the steel wire rope of the crown block is loosened to complete the replacement of the channel main body, and then the height of the channel main body is adjusted.
The following illustrates the method of use of the invention in different usage scenarios:
when rolling steel products with different specifications, taking the specification of the steel products from big to small as an example, the original rolled steel product specification is larger, so the height of the channel main body is lower relative to a rolling mill, after the steel products are changed into the steel products with small specifications, the original channel main body needs to be changed into the channel main body matched with the steel products with small specifications, namely, the height of a new channel main body is higher, and the alignment of the channel main body and the front and rear rolling mills needs to be adjusted again.
When the channel main body is used for a period of time, the feeding is stopped firstly, the abrasion condition in the long chute 3 is observed through the opening below the floating head prevention baffle 7, the abrasion condition in the long chute 3 can be comprehensively observed by turning the main baffle 6 through the turning plate handle 12, although the pressing part 18 has a pressing effect on the main pressure plate, the main baffle 6 does not need to be turned completely when the main baffle 6 is turned, and only the main baffle 6 needs to be turned to be capable of observing the internal condition of the long chute 3.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and all technical solutions that belong to the idea of the present invention belong to the scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. The inlet channel for bar finish rolling is characterized by comprising a base (1), a channel main body and a height adjusting device, wherein the channel main body is arranged above the base (1), the height adjusting device is arranged below the base (1), and the height adjusting device adjusts the height of the base (1);
the channel main body comprises a long chute (3) and a horn-shaped guide inlet (2), the guide inlet (2) is communicated with the long chute (3), guide rollers (4) are arranged at the upper end and the lower end of the guide inlet (2), the guide rollers (4) are flush with the inner wall of the long chute (3), the guide rollers (4) are located at the connecting part of the guide inlet (2) and the long chute (3), an openable main baffle (6) is arranged at the top of the long chute (3), one side of the main baffle (6) is hinged with the long chute (3), a plurality of openings are formed in the main baffle (6), and a horn-mouth-shaped anti-floating head baffle (7) is arranged above the openings; the height adjusting device comprises worm and gear mechanisms (5) located at two ends of the bottom of the base (1), and the output ends of the worm and gear mechanisms (5) are connected with the base (1).
2. The bar finish rolling inlet channel according to claim 1, wherein a fixing portion (8) for fixing the long chute (3) is disposed in the middle of the base (1), the fixing portion (8) is provided with a first fixing screw hole (9), a second fixing screw hole (16) matched with the first fixing screw hole (9) is disposed in the middle of the long chute (3), a fixing bolt (10) is screwed into the first fixing screw hole (9) and the second fixing screw hole (16) to fixedly connect the base (1) and the long chute (3), an adjusting screw rod (11) is disposed at one end of the base (1) far away from the guide inlet (2), the adjusting screw rod (11) is rotatably connected with the base (1), a fixing nut (17) matched with the adjusting screw rod (11) is disposed at one end of the long chute (3) far away from the guide inlet (2), and the adjusting screw rod (11) is threadedly connected with the fixing nut (17) to adjust the height of the long chute (3).
3. Inlet channel for rod finishing according to claim 2, characterised in that said fixing portion (8) is vertically provided with a plurality of first fixing screw holes (9).
4. Bar finishing inlet channel according to claim 3, characterised in that the adjusting screw (11) is fixed with a hexagonal nut for screwing, which is located between the base (1) and the fixing nut (17).
5. Bar finishing inlet channel according to claim 4, characterized in that the top surface of the main blind (6) is provided with a plurality of flap handles (12).
6. The inlet channel for bar finish rolling according to claim 5, wherein the long chute (3) is provided with a pressing portion (18) for pressing the main baffle (6), the pressing portion (18) is located at a hinge of the main baffle (6) and the long chute (3), the pressing portion (18) comprises a pressing bracket, a pressing head and a return spring, the pressing bracket is fixedly connected with a side surface of the long chute (3), the pressing head is hinged with the pressing bracket, the return spring is arranged at the hinge of the pressing head and the pressing bracket, and the pressing head is in contact with the main baffle (6).
7. Inlet channel for rod finishing according to claim 6, characterised in that the long chute (3) is provided with hooks on each side for lifting the long chute (3).
8. Bar finishing inlet channel according to claim 7, characterised in that the long chute (3) is provided with cooling water pipes on its sides.
9. Inlet channel for rod finishing according to claim 8, characterised in that the height adjustment means further comprise a bottom plate (14), both worm and gear mechanisms (5) being arranged on the bottom plate (14), the bottom of the bottom plate (14) being provided with guide wheels (15).
10. A method of using an inlet channel for bar finish rolling, which is applied to the inlet channel for bar finish rolling according to claim 9, wherein the height of the channel main body is adjusted: adjusting a worm gear mechanism (5) to initially align the guide inlet (2) with the outlet of the previous rolling mill and initially align the outlet of the long chute (3) with the inlet of the next rolling mill; then, an adjusting screw rod (11) on the base (1) is rotated, the middle of the long sliding chute (3) is connected with a fixing part (8) of the base (1) through a fixing bolt (10), so that the long sliding chute (3) rotates around the fixing bolt (10), the height of one end of an outlet of the long sliding chute (3) is adjusted, a guide inlet (2) is completely aligned with an outlet of a previous rolling mill, the outlet of the long sliding chute (3) is completely aligned with an inlet of a next rolling mill, and finally the adjusting screw rod (11) and the fixing bolt (10) are fixed to complete adjustment of the height of a channel main body;
righting the steel: when steel enters a channel main body from a previous rolling mill, a horn-shaped guide inlet (2) and a guide roller (4) quickly correct the direction of the steel entering the channel main body, so that the steel enters a long chute (3), the steel is in a floating state in the long chute (3) due to the long length of the steel, a plurality of openings are formed in a main baffle (6), the head end of the tilted steel penetrates through one opening and is in contact with a floating head prevention baffle (7) at the opening, the floating head prevention baffle (7) is horn-shaped, the head end of the steel returns to the long chute (3) under the guide effect of the floating head prevention baffle (7), when the position of the steel floating head is the main baffle (6) between the two openings, the head end of the steel jacks up the main baffle (6), and the main baffle (6) returns the steel of the floating head to the long chute (3) under the action of a pressing part (18);
in the process that the steel passes through the channel main body, cold water is continuously introduced into the cooling water pipe on the side surface of the long chute (3), so that the temperature of the long chute (3) is reduced;
replacing the channel main body: when the bottom of the long chute (3) is seriously worn or the specification of steel is changed, feeding is stopped, the crown block is connected with a hook (13) through a steel wire rope, the position of the channel main body is stabilized, then a fixing bolt (10) at the position of a fixing part (8) is removed, an adjusting screw (11) is rotated to separate a base (1) from the long chute (3), the channel main body is continuously and slowly hoisted in the process of rotating the adjusting screw (11) until the adjusting screw (11) is separated from the long chute (3), then a new channel main body is hoisted to the upper side of the base (1), the adjusting screw (11) is in threaded connection with a fixing nut (17) of the new channel main body, the adjusting screw (11) is rotated to connect the long chute (3) of the new channel main body with the base (1) and continuously descend the new channel main body, then the fixing part (8) is connected with the long chute (3) through the fixing bolt (10) at a proper height, the steel wire rope is loosened, the replacement of the channel main body is completed, and then the height of the channel main body is adjusted.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110294379.1A CN113145661B (en) | 2021-03-19 | 2021-03-19 | Inlet channel for bar finish rolling and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110294379.1A CN113145661B (en) | 2021-03-19 | 2021-03-19 | Inlet channel for bar finish rolling and use method thereof |
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| CN113145661B true CN113145661B (en) | 2022-12-06 |
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| WO2004060778A1 (en) * | 2002-12-03 | 2004-07-22 | Kauppila Richard W | High speed turnover apparatus and method |
| CN203316495U (en) * | 2013-06-03 | 2013-12-04 | 东北特钢集团北满特殊钢有限责任公司 | Guiding device for large bar entry |
| CN203803931U (en) * | 2014-04-29 | 2014-09-03 | 武钢集团昆明钢铁股份有限公司 | Steel stand-off device facilitating large-sized ribbed bar rolling and preventing piling-up of steel |
| CN205463641U (en) * | 2015-11-19 | 2016-08-17 | 内蒙古包钢钢联股份有限公司 | Roughing export is passed a bridge with adjustable |
| CN105396883A (en) * | 2015-12-16 | 2016-03-16 | 重庆麦拓科技有限公司 | Steel connection guide groove mold block |
| CN207026139U (en) * | 2017-07-31 | 2018-02-23 | 石横特钢集团有限公司 | Shaped steel finish rolling tandem mill unit inlet guider |
| CN108971238B (en) * | 2018-09-25 | 2024-03-22 | 湖州永兴特种不锈钢有限公司 | Rolling mill guide groove |
| CN209476934U (en) * | 2019-01-31 | 2019-10-11 | 日照钢铁控股集团有限公司 | A kind of guide apparatus between continous way hot-rolled steel section milling train |
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2021
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