CN217451496U

CN217451496U - Metallurgical roller bending block

Info

Publication number: CN217451496U
Application number: CN202220834336.8U
Authority: CN
Inventors: 黎雄伟
Original assignee: Smk Hydraulic Cylinder Co ltd
Current assignee: Smk Hydraulic Cylinder Co ltd
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2022-09-20
Anticipated expiration: 2032-04-12

Abstract

The utility model relates to a metallurgical bending roll block, which comprises a bending roll block body, a first clamping hydraulic cylinder, a second clamping hydraulic cylinder, a first adjusting hydraulic cylinder and a second adjusting hydraulic cylinder, the right end of the bending roller block body is provided with an opening, the first clamping hydraulic cylinder and the second clamping hydraulic cylinder are oppositely arranged and arranged at the front end and the rear end of the opening of the bending roller block body, the first clamping hydraulic cylinder is positioned at the rear end of the second clamping hydraulic cylinder, the rear end of the opening of the bending block body is provided with a through hole which penetrates through the bending block body, the front end of the through hole is provided with a first cylinder front cover, the rear end of the through hole is provided with a first cylinder rear cover, a first piston rod is arranged in the through hole, the front end of the opening of the roller bending block body is provided with a first inwards-sunken hydraulic cylinder mounting hole, the rear end of the first hydraulic cylinder mounting hole is provided with a second cylinder front cover, and a second piston rod penetrating through the second cylinder front cover is arranged in the first hydraulic cylinder mounting hole. The utility model discloses simple structure, pneumatic cylinder operating stability is high, the good reliability, not fragile.

Description

Metallurgical roller bending block

Technical Field

The utility model relates to the technical field of metallurgy, concretely relates to metallurgical roller bending block.

Background

In a cold rolling production line of a metallurgical enterprise, a hydraulic roll bending technology is widely applied to various advanced plate shape regulation and control means in cold rolling production due to the characteristics of rapidness, high efficiency and the like, becomes an indispensable technology in a plate shape control technology, and is vital to control the plate shape and the quality of a steel plate.

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When the reciprocating motion is realized by using the hydraulic cylinder, a speed reducing device can be omitted, no transmission gap exists, and the reciprocating motion is stable, so that the hydraulic cylinder is widely applied to hydraulic systems of various machines, and the hydraulic cylinder is applied to a metallurgical roller bending system and becomes a part which is crucial to control the plate shape and quality of a steel plate.

The copper slide of bending roll system can appear wearing and tearing of different degree in the use, and the following problem can appear in the long-time use of bending roll piece system pneumatic cylinder: firstly, the metallurgical bending block hydraulic cylinder works frequently, the stability is easy to be disordered during working, even medium oil leaks, the stability is poor, and stable pressure cannot be provided in the production process; secondly, the matching mode of a piston rod and a cylinder bottom of the existing metallurgical roll bending block hydraulic cylinder cannot well ensure that the piston rod and the cylinder bottom are mutually independent, and cannot well advance or stretch, so that the phenomenon of cylinder collision or the phenomenon that a piston cylinder rushes out of the roll bending block when the hydraulic cylinder works is easily caused; third, the ubiquitous hydraulic cylinder body hole wearability of present bending roller piece is relatively poor, and life is short, in case wearing and tearing at the cylinder body in addition, leads to the bending roller system to become invalid, for guaranteeing normal production, just need all trade whole cylinder body, changes the bending roller piece often, wastes time and energy, has increased manufacturing cost, seriously restricts the steady operation of production line.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a simple structure, the metallurgical roller bending piece that pneumatic cylinder operating stability is high, the good reliability, not fragile.

In order to achieve the above object, the utility model provides a following technical scheme: a metallurgical bending roll block comprises a bending roll block body, a first clamping hydraulic cylinder, a second clamping hydraulic cylinder, a first adjusting hydraulic cylinder and a second adjusting hydraulic cylinder, wherein the right end of the bending roll block body is provided with an opening, the first clamping hydraulic cylinder and the second clamping hydraulic cylinder are oppositely arranged and installed at the front end and the rear end of the opening of the bending roll block body, the first clamping hydraulic cylinder is positioned at the rear end of the second clamping hydraulic cylinder, the rear end of the opening of the bending roll block body is provided with a through hole penetrating through the bending roll block body, the front end of the through hole is provided with a first cylinder front cover, the rear end of the through hole is provided with a first cylinder rear cover, a first piston rod is arranged in the through hole, the first piston rod penetrates through the first cylinder front cover and can slide back and forth relative to the through hole under the mutual matching of the first cylinder front cover, the first cylinder rear cover and the first piston, the front end of the opening of the bending roll block body is provided with an inwards sunken first hydraulic cylinder mounting hole, the rear end of the first hydraulic cylinder mounting hole is provided with a second cylinder front cover, a second piston rod penetrating through the second cylinder front cover is arranged in the first hydraulic cylinder mounting hole, the front end of the second piston rod is provided with a second piston, the second piston rod can slide back and forth relative to the first hydraulic cylinder mounting hole under the mutual matching of the second cylinder front cover and the second piston, the first adjusting hydraulic cylinder is positioned on the left side of a second clamping hydraulic cylinder at the front end of the opening of the bending roller block body, the left side of the first hydraulic cylinder mounting hole is provided with a second hydraulic cylinder mounting hole with a backward opening, the rear end of the second hydraulic cylinder mounting hole is provided with a third cylinder front cover, a third piston rod penetrating through the third cylinder front cover is arranged in the second hydraulic cylinder mounting hole, the front end of the third piston rod is provided with a third piston, and the third piston rod can slide back and forth relative to the second hydraulic cylinder mounting hole under the mutual matching of the third cylinder front cover and the third piston, the left side that the second adjustment pneumatic cylinder is located the first tight pneumatic cylinder that presss from both sides of bending roller piece body rear end, the left side of through-hole is equipped with backward open-ended third pneumatic cylinder mounting hole, the rear end of third pneumatic cylinder mounting hole is equipped with fourth jar protecgulum, be equipped with the fourth piston rod that runs through the fourth jar protecgulum in the third pneumatic cylinder mounting hole, the fourth piston is installed to the front end of fourth piston rod, and the fourth piston rod can slide around for the third pneumatic cylinder mounting hole under the mutually supporting of fourth jar protecgulum, fourth piston.

As further elaboration of the technical scheme:

preferably, the bending roller block body is E type, including the vertical body of bending roller block and the horizontal body of first bending roller block, the horizontal body of second bending roller block and the horizontal body of third bending roller block that is connected with the vertical body of bending roller block and transversely sets up in proper order from back to front, first tight pneumatic cylinder of clamp and first adjustment pneumatic cylinder are located the horizontal body of first bending roller block respectively, and the tight pneumatic cylinder of second clamp and second adjustment pneumatic cylinder are located the rear portion of the horizontal body of second bending roller block respectively.

Preferably, the device further comprises a third clamping hydraulic cylinder and a fourth clamping hydraulic cylinder which are arranged oppositely, the third clamping hydraulic cylinder is located at the front portion of the transverse body of the second bending block, the third clamping hydraulic cylinder and the second clamping hydraulic cylinder are identical in structure and are arranged oppositely, the fourth clamping hydraulic cylinder is located on the transverse body of the third bending block, and the fourth clamping hydraulic cylinder and the first clamping hydraulic cylinder are identical in structure.

Preferably, dustproof sealing rings, piston rod supporting rings and piston rod guide sleeves are sequentially arranged between the inner periphery of the first cylinder front cover and the first piston rod, between the inner periphery of the second cylinder front cover and the second piston rod, between the inner periphery of the third cylinder front cover and the third piston rod and between the inner periphery of the fourth cylinder front cover and the fourth piston rod from outside to inside, piston guide sleeves are arranged on the outer peripheries of the first piston, the second piston, the third piston and the fourth piston, between the inner peripheries of the first cylinder front cover, the first cylinder rear cover and the through hole, between the inner periphery of the second cylinder front cover and the first hydraulic cylinder mounting hole, between the inner periphery of the third cylinder front cover and the second hydraulic cylinder mounting hole, and medium oil sealing rings are arranged between the inner peripheries of the fourth cylinder front cover and the third hydraulic cylinder mounting hole.

Preferably, the rear end of the first cylinder rear cover is provided with a positioning snap ring for positioning and fixing the first cylinder rear cover, and the rear end of the positioning snap ring is provided with a snap ring gland.

Preferably, the aperture of the first hydraulic cylinder mounting hole is larger than the aperture of the third hydraulic cylinder mounting hole, and the aperture of the third hydraulic cylinder mounting hole is larger than the aperture of the second hydraulic cylinder mounting hole.

Preferably, the thickness of the bending block body is 190.0-210.0 mm, the length of the bending block body is 830.0-880.0 mm, the width of the bending block body is 295.0-310.0 mm, the strokes of the first clamping hydraulic cylinder, the second clamping hydraulic cylinder, the third clamping hydraulic cylinder and the fourth clamping hydraulic cylinder are 26.0-33.0 mm, the cylinder diameters are 95.0-105.0 mm, the rod diameters are 54.0-60.0 mm, the stroke of the first adjusting hydraulic cylinder is 23.0-27.0 mm, the cylinder diameter is 55.0-65.0 mm, the rod diameter is 34.0-38.0 mm, the stroke of the second adjusting hydraulic cylinder is 63.0-80.0 mm, the cylinder diameter is 65.0-75.0 mm, and the rod diameter is 42.0-48.0 mm.

Preferably, the thickness of the bending block body is 195.0 mm-205.0 mm, the length of the bending block body is 835.0 mm-870.0 mm, the width of the bending block body is 298.0 mm-306.0 mm, the strokes of the first clamping hydraulic cylinder, the second clamping hydraulic cylinder, the third clamping hydraulic cylinder and the fourth clamping hydraulic cylinder are 27.0 mm-32.0 mm, the cylinder diameter is 97.0 mm-102.0 mm, the rod diameter is 55.0 mm-58.0 mm, the stroke of the first adjusting hydraulic cylinder is 24.0 mm-27.0 mm, the cylinder diameter is 58.0 mm-63.0 mm, the rod diameter is 35.0 mm-37.0 mm, the stroke of the second adjusting hydraulic cylinder is 65.0 mm-75.0 mm, the cylinder diameter is 66.0 mm-72.0 mm, and the rod diameter is 43.0 mm-48.0 mm.

Preferably, the medium oil sealing ring is an O-shaped medium oil sealing ring.

Compared with the prior art, the beneficial effects of the utility model are that:

the bending roll comprises a bending roll body, a first clamping hydraulic cylinder, a second clamping hydraulic cylinder, a third clamping hydraulic cylinder, a fourth clamping hydraulic cylinder, a first adjusting hydraulic cylinder and a second adjusting hydraulic cylinder, wherein the bending roll body is E-shaped and comprises a bending roll vertical body, and a first bending roll transverse body, a second bending roll transverse body and a third bending roll transverse body which are connected with the bending roll vertical body and are transversely arranged from back to front in sequence, the first clamping hydraulic cylinder and the first adjusting hydraulic cylinder are respectively positioned on the first bending roll transverse body, the second clamping hydraulic cylinder and the second adjusting hydraulic cylinder are respectively positioned at the rear part of the second bending roll transverse body, the third clamping hydraulic cylinder is positioned at the front part of the second bending roll transverse body, the third clamping hydraulic cylinder and the second clamping hydraulic cylinder are identical in structure and are arranged oppositely, the fourth clamping hydraulic cylinder is positioned on the third bending roll transverse body, the fourth clamping hydraulic cylinder and the first clamping hydraulic cylinder are the same in structure, the whole structure is simple and compact, the operation stability is good, and the working strength requirement of the bending roller block is guaranteed.

Secondly, the utility model discloses between the interior week of first jar protecgulum and the first piston rod, between the interior week of second jar protecgulum and the second piston rod, between the interior week of third jar protecgulum and the third piston rod and between the interior week of fourth jar protecgulum and the fourth piston rod from outside to inside all be equipped with dustproof sealing circle, piston rod support ring and piston rod uide bushing in proper order, the periphery of first piston, second piston, third piston and fourth piston is equipped with the piston uide bushing, between first jar protecgulum, first jar back cover and through-hole interior week, between second jar protecgulum and the first pneumatic cylinder mounting hole interior week, between third jar protecgulum and the second pneumatic cylinder mounting hole interior week, all be equipped with the medium oil sealing circle between fourth jar protecgulum and the third pneumatic cylinder mounting hole interior week, avoid appearing medium oil internal leakage, the wearability also obtains improving, has guaranteed the stability of metallurgical bending roller piece pneumatic cylinder frequent down of work, Reliability and long service life.

Thirdly, the utility model discloses the rear end of lid is equipped with the location snap ring behind the first jar for the location is fixed lid behind the first jar, the rear end of location snap ring is equipped with the snap ring gland, and it is not fragile, easy maintenance avoids the pneumatic cylinder to hit jar phenomenon or the piston cylinder dashes out the bending roll piece at the during operation, and the reliability obtains improving, has reduced manufacturing cost, guarantees the steady operation of production line.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a bottom view of fig. 1.

In the figure: 1. a roll bending block vertical body; 2. a first roll bending block transverse body; 3. a second roll bending block transverse body; 4. a third roll bending block transverse body; 5. a first clamping hydraulic cylinder; 6. a second clamping hydraulic cylinder; 7. a first adjusting hydraulic cylinder; 8. a second adjusting hydraulic cylinder; 9. a first cylinder front cover; 10. a first cylinder rear cover; 11. a first piston rod; 12. a first piston; 13. a second cylinder front cover; 14. a second piston rod; 15. a second piston; 16. a third piston rod; 17. a fourth piston rod; 18. a third clamping hydraulic cylinder; 19. a fourth clamping hydraulic cylinder; 20. a dustproof sealing ring; 21. a piston rod support ring; 22. a piston rod guide sleeve; 23. a piston guide sleeve; 24. a medium oil seal ring; 25. positioning the snap ring; 26. a snap ring gland.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in figure 1, the utility model relates to a metallurgical bending roll block, which comprises a bending roll block body, a first clamping hydraulic cylinder 5, a second clamping hydraulic cylinder 6, a first adjusting hydraulic cylinder 7 and a second adjusting hydraulic cylinder 8, wherein the right end of the bending roll block body is provided with an opening, the first clamping hydraulic cylinder 5 and the second clamping hydraulic cylinder 6 are oppositely arranged and installed at the front end and the rear end of the opening of the bending roll block body, the first clamping hydraulic cylinder 5 is positioned at the rear end of the second clamping hydraulic cylinder 6, the rear end of the opening of the bending roll block body is provided with a through hole penetrating through the bending roll block body, the front end of the through hole is provided with a first cylinder front cover 9, the rear end of the through hole is provided with a first cylinder rear cover 10, a first piston rod 11 is arranged in the through hole, the rear end of the first piston rod 11 is provided with a first piston 12, the first piston rod 11 penetrates through the first cylinder front cover 9 and can slide back and forth relative to the through hole under the mutual matching of the first cylinder front cover 9, the first cylinder rear cover 10 and the first piston 12, the front end of the opening of the bending roller block body is provided with a first hydraulic cylinder mounting hole which is sunken inwards, the rear end of the first hydraulic cylinder mounting hole is provided with a second cylinder front cover 13, a second piston rod 14 which penetrates through the second cylinder front cover 13 is arranged in the first hydraulic cylinder mounting hole, the front end of the second piston rod 14 is provided with a second piston 15, the second piston rod 14 can slide back and forth relative to the first hydraulic cylinder mounting hole under the mutual matching of the second cylinder front cover 13 and the second piston 15, the first adjusting hydraulic cylinder 7 is positioned on the left side of a second clamping hydraulic cylinder 6 at the front end of the opening of the bending roller block body, the left side of the first hydraulic cylinder mounting hole is provided with a second hydraulic cylinder mounting hole which is opened backwards, the rear end of the second hydraulic cylinder mounting hole is provided with a third cylinder front cover, a third piston rod 16 which penetrates through the third cylinder front cover is arranged in the second hydraulic cylinder mounting hole, and the front end of the third piston rod 16 is provided with a third piston, the third piston rod 16 can slide back and forth relative to the second hydraulic cylinder mounting hole under the mutual cooperation of the third cylinder front cover and the third piston, the second adjusting hydraulic cylinder 8 is positioned on the left side of the first clamping hydraulic cylinder 5 at the rear end of the bending block body, a third hydraulic cylinder mounting hole with a backward opening is formed in the left side of the through hole, a fourth cylinder front cover is arranged at the rear end of the third hydraulic cylinder mounting hole, a fourth piston rod 17 penetrating through the fourth cylinder front cover is arranged in the third hydraulic cylinder mounting hole, a fourth piston is installed at the front end of the fourth piston rod 17, and the fourth piston rod 17 can slide back and forth relative to the third hydraulic cylinder mounting hole under the mutual cooperation of the fourth cylinder front cover and the fourth piston.

As shown in fig. 1 and 2, the bending block body is of an E-shape, and comprises a bending block vertical body 1 and a first bending block horizontal body 2, a second bending block horizontal body 3 and a third bending block horizontal body 4 which are connected with the bending block vertical body 1 and are horizontally arranged from back to front in sequence, wherein a first clamping hydraulic cylinder 5 and a first adjusting hydraulic cylinder 7 are respectively positioned on the first bending block horizontal body 2, and a second clamping hydraulic cylinder 6 and a second adjusting hydraulic cylinder 8 are respectively positioned at the rear part of the second bending block horizontal body 3.

As shown in fig. 1 and 2, the bending device further comprises a third clamping hydraulic cylinder 18 and a fourth clamping hydraulic cylinder 19 which are oppositely arranged, wherein the third clamping hydraulic cylinder 18 is located at the front part of the second bending block transverse body 3, the third clamping hydraulic cylinder 18 and the second clamping hydraulic cylinder 6 are identical in structure and are oppositely arranged, the fourth clamping hydraulic cylinder 19 is located on the third bending block transverse body 4, and the fourth clamping hydraulic cylinder 19 and the first clamping hydraulic cylinder 5 are identical in structure.

As shown in fig. 1, a dust-proof sealing ring 20, a piston rod supporting ring 21 and a piston rod guiding sleeve 22 are sequentially arranged between the inner periphery of the first cylinder front cover 9 and the first piston rod 11, between the inner periphery of the second cylinder front cover 13 and the second piston rod 14, between the inner periphery of the third cylinder front cover and the third piston rod 16 and between the inner periphery of the fourth cylinder front cover and the fourth piston rod 17 from outside to inside, the peripheries of the first piston 12, the second piston 15, the third piston and the fourth piston are provided with piston guide sleeves 23, medium oil seal rings 24 are arranged between the first cylinder front cover 9, the first cylinder rear cover 10 and the inner periphery of the through hole, between the second cylinder front cover 13 and the inner periphery of the first hydraulic cylinder mounting hole, between the third cylinder front cover and the inner periphery of the second hydraulic cylinder mounting hole, and between the fourth cylinder front cover and the inner periphery of the third hydraulic cylinder mounting hole, in the embodiment, the medium oil seal rings 24 are O-shaped medium oil seal rings 24.

As shown in fig. 1, a positioning snap ring 25 is disposed at the rear end of the first cylinder rear cover 10 for positioning and fixing the first cylinder rear cover 10, and a snap ring gland 26 is disposed at the rear end of the positioning snap ring 25.

Furthermore, the aperture of the first hydraulic cylinder mounting hole is larger than that of the third hydraulic cylinder mounting hole, and the aperture of the third hydraulic cylinder mounting hole is larger than that of the second hydraulic cylinder mounting hole.

Further, the thickness of the bending block body is 190.0-210.0 mm, the length of the bending block body is 830.0-880.0 mm, the width of the bending block body is 295.0-310.0 mm, the strokes of the first clamping hydraulic cylinder 5, the second clamping hydraulic cylinder 6, the third clamping hydraulic cylinder 18 and the fourth clamping hydraulic cylinder 19 are 26.0-33.0 mm, the cylinder diameters are 95.0-105.0 mm, the rod diameters are 54.0-60.0 mm, the stroke of the first adjusting hydraulic cylinder 7 is 23.0-27.0 mm, the cylinder diameter is 55.0-65.0 mm, the rod diameter is 34.0-38.0 mm, the stroke of the second adjusting hydraulic cylinder 8 is 63.0-80.0 mm, the cylinder diameter is 65.0-75.0 mm, and the rod diameter is 42.0-48.0 mm. Preferably, the thickness of the bending block body is 195.0mm to 205.0mm, the length of the bending block body is 835.0mm to 870.0mm, the width of the bending block body is 298.0mm to 306.0mm, the strokes of the first clamping hydraulic cylinder 5, the second clamping hydraulic cylinder 6, the third clamping hydraulic cylinder 18 and the fourth clamping hydraulic cylinder 19 are 27.0mm to 32.0mm, the cylinder diameters are 97.0mm to 102.0mm, the rod diameters are 55.0mm to 58.0mm, the stroke of the first adjusting hydraulic cylinder 7 is 24.0mm to 27.0mm, the cylinder diameter is 58.0mm to 63.0mm, the rod diameter is 35.0mm to 37.0mm, the stroke of the second adjusting hydraulic cylinder 8 is 65.0mm to 75.0mm, the cylinder diameter is 66.0mm to 72.0mm, and the rod diameter is 43.0mm to 48.0 mm. In this embodiment, the thickness of the bending block body is 200.0mm, the length of the bending block body is 850.0mm, the width of the bending block body is 303.0mm, the strokes of the first clamping hydraulic cylinder 5, the second clamping hydraulic cylinder 6, the third clamping hydraulic cylinder 18 and the fourth clamping hydraulic cylinder 19 are all 30.0mm, the cylinder diameters are all 100.0mm, the rod diameters are all 56.0mm, the stroke of the first adjusting hydraulic cylinder 7 is 25.0mm, the cylinder diameter is 60.0mm, the rod diameter is 36.0mm, the stroke of the second adjusting hydraulic cylinder 8 is 70.0mm, the cylinder diameter is 70.0mm, and the rod diameter is 45.0 mm.

In the description of the present application, it is to be understood that the terms "left", "right", "front", "rear", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A metallurgical bending roll block is characterized in that: the bending roll comprises a bending roll body, a first clamping hydraulic cylinder, a second clamping hydraulic cylinder, a first adjusting hydraulic cylinder and a second adjusting hydraulic cylinder, wherein the right end of the bending roll body is open, the first clamping hydraulic cylinder and the second clamping hydraulic cylinder are oppositely arranged and installed at the front end and the rear end of the opening of the bending roll body, the first clamping hydraulic cylinder is positioned at the rear end of the second clamping hydraulic cylinder, a through hole penetrating through the bending roll body is formed in the rear end of the opening of the bending roll body, a first cylinder front cover is arranged at the front end of the through hole, a first cylinder rear cover is arranged at the rear end of the through hole, a first piston rod is arranged in the through hole, a first piston is installed at the rear end of the first piston rod, the first piston rod penetrates through the first cylinder front cover and can slide back and forth relative to the through hole under the mutual matching of the first cylinder front cover, the first cylinder rear cover and the first piston, a first hydraulic cylinder mounting hole which is inwards sunken is formed in the front end of the opening of the bending roll body, the rear end of the first hydraulic cylinder mounting hole is provided with a second cylinder front cover, a second piston rod penetrating through the second cylinder front cover is arranged in the first hydraulic cylinder mounting hole, the front end of the second piston rod is provided with a second piston, the second piston rod can slide back and forth relative to the first hydraulic cylinder mounting hole under the mutual matching of the second cylinder front cover and the second piston, the first adjusting hydraulic cylinder is positioned on the left side of a second clamping hydraulic cylinder at the front end of the opening of the bending roller block body, the left side of the first hydraulic cylinder mounting hole is provided with a second hydraulic cylinder mounting hole with a backward opening, the rear end of the second hydraulic cylinder mounting hole is provided with a third cylinder front cover, a third piston rod penetrating through the third cylinder front cover is arranged in the second hydraulic cylinder mounting hole, the front end of the third piston rod is provided with a third piston, and the third piston rod can slide back and forth relative to the second hydraulic cylinder mounting hole under the mutual matching of the third cylinder front cover and the third piston, the left side that the second adjustment pneumatic cylinder is located the first tight pneumatic cylinder that presss from both sides of bending roller piece body rear end, the left side of through-hole is equipped with backward open-ended third pneumatic cylinder mounting hole, the rear end of third pneumatic cylinder mounting hole is equipped with fourth jar protecgulum, be equipped with the fourth piston rod that runs through the fourth jar protecgulum in the third pneumatic cylinder mounting hole, the fourth piston is installed to the front end of fourth piston rod, and the fourth piston rod can slide around for the third pneumatic cylinder mounting hole under the mutually supporting of fourth jar protecgulum, fourth piston.

2. The metallurgical roll bending block of claim 1, wherein: the bending roll block body is of an E type and comprises a bending roll block vertical body and a first bending roll block transverse body, a second bending roll block transverse body and a third bending roll block transverse body which are connected with the bending roll block vertical body and are sequentially and transversely arranged from back to front, a first clamping hydraulic cylinder and a first adjusting hydraulic cylinder are respectively located on the first bending roll block transverse body, and a second clamping hydraulic cylinder and a second adjusting hydraulic cylinder are respectively located at the rear part of the second bending roll block transverse body.

3. The metallurgical roll bending block of claim 2, wherein: the device is characterized by further comprising a third clamping hydraulic cylinder and a fourth clamping hydraulic cylinder which are oppositely arranged, wherein the third clamping hydraulic cylinder is located at the front part of the transverse body of the second bending block, the third clamping hydraulic cylinder and the second clamping hydraulic cylinder are identical in structure and are oppositely arranged, the fourth clamping hydraulic cylinder is located on the transverse body of the third bending block, and the fourth clamping hydraulic cylinder and the first clamping hydraulic cylinder are identical in structure.

4. The metallurgical roll bending block of claim 3, wherein: the dustproof sealing rings, the piston rod supporting rings and the piston rod guide sleeves are sequentially arranged between the inner periphery of the first cylinder front cover and the first piston rod, between the inner periphery of the second cylinder front cover and the second piston rod, between the inner periphery of the third cylinder front cover and the third piston rod and between the inner periphery of the fourth cylinder front cover and the fourth piston rod from outside to inside, the piston guide sleeves are arranged on the peripheries of the first piston, the second piston, the third piston and the fourth piston, the inner peripheries of the first cylinder front cover, the first cylinder rear cover and the through hole, the inner periphery of the second cylinder front cover and the first hydraulic cylinder mounting hole, the inner periphery of the third cylinder front cover and the second hydraulic cylinder mounting hole and the inner periphery of the fourth cylinder front cover and the third hydraulic cylinder mounting hole.

5. The metallurgical roll bending block of claim 4, wherein: the rear end of the first cylinder rear cover is provided with a positioning snap ring for positioning and fixing the first cylinder rear cover, and the rear end of the positioning snap ring is provided with a snap ring gland.

6. The metallurgical roll bending block of claim 5, wherein: the aperture of the first hydraulic cylinder mounting hole is larger than that of the third hydraulic cylinder mounting hole, and the aperture of the third hydraulic cylinder mounting hole is larger than that of the second hydraulic cylinder mounting hole.

7. The metallurgical roll bending block of claim 6, wherein: the thickness of the bending roll block body is 190.0-210.0 mm, the length of the bending roll block body is 830.0-880.0 mm, the width of the bending roll block body is 295.0-310.0 mm, the strokes of the first clamping hydraulic cylinder, the second clamping hydraulic cylinder, the third clamping hydraulic cylinder and the fourth clamping hydraulic cylinder are 26.0-33.0 mm, the cylinder diameters are 95.0-105.0 mm, the rod diameters are 54.0-60.0 mm, the stroke of the first adjusting hydraulic cylinder is 23.0-27.0 mm, the cylinder diameter is 55.0-65.0 mm, the rod diameter is 34.0-38.0 mm, the stroke of the second adjusting hydraulic cylinder is 63.0-80.0 mm, the cylinder diameter is 65.0-75.0 mm, and the rod diameter is 42.0-48.0 mm.

8. The metallurgical roll bending block of claim 7, wherein: the thickness of the bending roll block body is 195.0-205.0 mm, the length of the bending roll block body is 835.0-870.0 mm, the width of the bending roll block body is 298.0-306.0 mm, the strokes of the first clamping hydraulic cylinder, the second clamping hydraulic cylinder, the third clamping hydraulic cylinder and the fourth clamping hydraulic cylinder are 27.0-32.0 mm, the cylinder diameter is 97.0-102.0 mm, the rod diameter is 55.0-58.0 mm, the stroke of the first adjusting hydraulic cylinder is 24.0-27.0 mm, the cylinder diameter is 58.0-63.0 mm, the rod diameter is 35.0-37.0 mm, the stroke of the second adjusting hydraulic cylinder is 65.0-75.0 mm, the cylinder diameter is 66.0-72.0 mm, and the rod diameter is 43.0-48.0 mm.

9. The metallurgical roll bending block of claim 4, wherein: the medium oil seal ring is an O-shaped medium oil seal ring.