Pullback balancing device for vertical rolling mill

Abstract

The utility model discloses a pull-back balancing device for a vertical rolling mill, and relates to the technical field of vertical rolling mills. The pressing head comprises a vertical roll rack, a balance beam, a vertical roll assembly, two lead screw assemblies and two pull-back oil cylinders, the vertical roll assembly is arranged on the outer side of the balance beam, two fastening rings fixed to the balance beam are connected to the vertical roll assembly through bearings, and the two lead screw assemblies penetrate through the vertical roll rack and are connected with the balance beam through a pressing head body. The oil cylinders are horizontally arranged on the upper portion and the lower portion of the balance beam, it is guaranteed that the balance beam is evenly stressed while the oil cylinders are convenient to replace and maintain, the weight in the horizontal direction can be balanced through the design of the connecting rods, and the pull-back oil cylinders provide backward pulling force for the vertical rollers through the balance beam. The lead screw assembly can overcome the pulling force of the pull-back oil cylinder and is used for adjusting the roll gap, and the problems of unstable long-term work, stress unbalance loading, deformation, abnormal abrasion and mechanical faults during operation of the vertical rolling mill are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vertical rolling mills, in particular to a pull-back balancing device for vertical rolling mills. Background Art

[0002] The vertical roller assembly of the vertical roller mill is arranged vertically, and the screw assembly for roller gap adjustment is arranged horizontally. The horizontally arranged screw assembly and the gravity of the pressure head body lack effective balance support, which will cause unbalanced load problems on the sliding and rotating contact surfaces, thereby causing abnormal wear of the spherical pair and affecting working stability.

[0003] At present, the pull-back cylinder is arranged horizontally between the two screw assemblies. However, there will be a problem of uneven force on the upper and lower positions of the balance beam, which will lead to a high frequency of equipment failures and cannot meet the needs of large-scale production or on-site operations. Utility Model Content

[0004] The utility model aims to provide a pullback balancing device for a vertical rolling mill. The oil cylinders are horizontally arranged at the upper and lower positions of the balance beam to facilitate replacement and maintenance of the oil cylinders while ensuring uniform force on the balance beam. The design of the connecting rod can balance the weight in the horizontal direction. The pullback oil cylinder provides a backward pulling force to the vertical roller through the balance beam. The screw assembly can overcome the pulling force of the pullback oil cylinder to adjust the roller gap to reduce it, thereby solving the problems of long-term working instability, unbalanced force, deformation, abnormal wear and mechanical failure during the operation of the vertical rolling mill.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a pull-back balancing device for an vertical rolling mill, comprising a vertical roller frame, a balance beam, a vertical roller assembly, two screw assemblies and two pull-back oil cylinders, wherein the vertical roller assembly is arranged outside the balance beam, and the vertical roller assembly is connected to two fastening rings fixed to the balance beam through a bearing, and the two screw assemblies penetrate the vertical roller frame and are connected to the balance beam through a pressure head body;

[0007] The two pull-back oil cylinders are respectively arranged at the top and bottom between the vertical roller frame and the balance beam, the housing end of the pull-back oil cylinder is fixed to the vertical roller frame through a fixing seat, and the output ends of the two pull-back oil cylinders are respectively connected to the top and bottom of the balance beam through a hinge seat;

[0008] A connecting rod is provided between the two pressing head bodies, a flange is provided on the peripheral side of the pressing head body, and the connecting rod and the flange are rotatably connected through a pin;

[0009] The top of the vertical roller assembly is open, a support ring is fixed to the top of the vertical roller assembly through a flange, a cover plate is provided on the top of the support ring, one side of the cover plate is rotatably connected to the support ring through a rotating member, a fastening screw is passed through the other side of the cover plate, a nut is provided on the inner side of the top of the support ring, and the cover plate is fixed to the support ring through the fastening screw and the nut;

[0010] An inner convex edge is arranged on the inner side of the upper surface of the support ring, and a seal is arranged between the upper surface of the support ring and the cover plate.

[0011] Furthermore, a group of pin sleeves are fixedly passed through the balance beam, and a pin shaft passing through the pin sleeves is provided on the fastening ring, and the pin shaft is connected to the pressure head body.

[0012] Furthermore, an end ear cooperating with a hinge seat is provided at the end of the pull-back oil cylinder, an upper telescopic protective sleeve is provided between the end ear and the end of the casing of the pull-back oil cylinder, and the upper telescopic protective sleeve is sleeved on the outside of the output end rod of the pull-back oil cylinder.

[0013] Furthermore, a lower telescopic protective sleeve is fixed between the pressure head body and the vertical roller frame, and the lower telescopic protective sleeve is sleeved on the outside of the screw assembly between the pressure head body and the vertical roller frame.

[0014] Furthermore, a guide rod is provided between the balance beam and the vertical roller frame and at a position outside the screw assembly, one end of the guide rod is connected to the balance beam through a support, the other end of the guide rod passes through the vertical roller frame and is slidably connected to the vertical roller frame, and a plurality of outer edge rings are provided on the peripheral side of the lower telescopic protective cover, and a through opening is provided on the outer edge ring that slides along the guide rod.

[0015] Furthermore, a plurality of rollers are embedded in the through opening, and the plurality of rollers roll along the outer surface of the guide rod.

[0016] The utility model has the following beneficial effects:

[0017] 1. The utility model horizontally arranges the oil cylinders at the upper and lower positions of the balance beam, which facilitates the replacement and maintenance of the oil cylinders while ensuring that the force on the balance beam is uniform. The design of the connecting rod can balance the weight in the horizontal direction. The pull-back oil cylinder provides a backward pulling force to the vertical roller through the balance beam. The screw assembly can overcome the pulling force of the pull-back oil cylinder to adjust the roller gap to reduce it, thereby solving the problems of long-term working instability, unbalanced load, deformation, abnormal wear and mechanical failure during the operation of the vertical rolling mill.

[0018] 2. The utility model adopts a flip-cover structure design of the end cover, which can be quickly opened and closed, thereby facilitating the maintenance and repair of the counter roller and facilitating the operation and repair of the staff.

[0019] 3. The utility model can improve the stability between the balance beam and the vertical roller frame through the design of the guide rod, and can be used for guiding and supporting the lower telescopic protective cover to ensure the stable operation of the lower telescopic protective cover, thereby ensuring the protection effect of the screw assembly.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a structural schematic diagram of a pull-back balancing device for a vertical rolling mill according to the utility model;

[0023] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0024] Figure 3 It is a schematic diagram of the structure at the opening and roller position on the outer ring;

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1-vertical roller frame, 2-balance beam, 3-vertical roller assembly, 4-screw assembly, 5-pressure head body, 6-pullback cylinder, 7-connecting rod, 8-lower telescopic protection cover, 9-guide rod, 201-pin sleeve, 301-fastening ring, 302-support ring, 303-cover plate, 304-fastening screw, 305-nut, 501-flange, 601-fixed seat, 602-hinge seat, 603-end ear, 604-upper telescopic protection cover, 801-outer edge ring, 802-through port, 803-roller, 901-support. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-3As shown, the utility model is a pull-back balancing device for an vertical rolling mill, comprising a vertical roller frame 1, a balance beam 2, a vertical roller assembly 3, two screw assemblies 4 and two pull-back oil cylinders 6, the vertical roller assembly 3 is arranged outside the balance beam 2, the vertical roller assembly 3 is connected to two fastening rings 301 fixed to the balance beam 2 through a bearing, and the two screw assemblies 4 penetrate the vertical roller frame 1 and are connected to the balance beam 2 through a pressure head body 5;

[0029] Two pull-back oil cylinders 6 are respectively arranged at the top and bottom between the vertical roller frame 1 and the balance beam 2, and the housing end of the pull-back oil cylinder 6 is fixed to the vertical roller frame 1 through a fixing seat 601, and the output ends of the two pull-back oil cylinders 6 are respectively connected to the top and bottom of the balance beam 2 through a hinge seat 602;

[0030] A connecting rod 7 is provided between the two pressing head bodies 5, and a flange 501 is provided on the side surface of the pressing head body 5. The connecting rod 7 is rotatably connected to the flange 501 through a pin.

[0031] The top of the vertical roller assembly 3 is open, and a support ring 302 is fixed to the top of the vertical roller assembly 3 through a flange. A cover plate 303 is provided on the top of the support ring 302. One side of the cover plate 303 is rotatably connected to the support ring 302 through a rotating member. A fastening screw 304 is passed through the other side of the cover plate 303. A nut 305 is provided on the inner side of the top of the support ring 302. The cover plate 303 is fixed to the support ring 302 through the fastening screw 304 and the nut 305.

[0032] An inner convex edge is provided on the inner side of the upper surface of the support ring 302 , and a seal is provided between the upper surface of the support ring 302 and the cover plate 303 .

[0033] Among them Figure 1 As shown, a group of pin sleeves 201 are fixedly passed through the balance beam 2 , and a pin shaft passing through the pin sleeves 201 is provided on the fastening ring 301 , and the pin shaft is connected to the pressure head body 5 .

[0034] Among them Figure 1 As shown, an end ear 603 cooperating with a hinge seat 602 is provided at the end of the pull-back cylinder 6, an upper telescopic protective sleeve 604 is provided between the end ear 603 and the end of the casing of the pull-back cylinder 6, and the upper telescopic protective sleeve 604 is sleeved on the outside of the output end rod of the pull-back cylinder 6.

[0035] Among them Figure 1 As shown, a lower telescopic protective cover 8 is fixed between the pressure head body 5 and the vertical roller frame 1 , and the lower telescopic protective cover 8 is sleeved on the outside of the lead screw assembly 4 between the pressure head body 5 and the vertical roller frame 1 .

[0036] Among them Figure 1 and Figure 3As shown, a guide rod 9 is provided between the balance beam 2 and the vertical roller frame 1 and at a position outside the screw assembly 4, one end of the guide rod 9 is connected to the balance beam 2 through a support 901, and the other end of the guide rod 9 penetrates the vertical roller frame 1 and is slidably connected to the vertical roller frame 1, and a plurality of outer edge rings 801 are provided on the side surface of the lower telescopic protective cover 8, and a through hole 802 that slides along the guide rod 9 is provided on the outer edge ring 801.

[0037] Among them Figure 3 As shown, a plurality of rollers 803 are embedded in the through opening 802 , and the plurality of rollers 803 roll along the outer surface of the guide rod 9 .

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A pullback balancing device for an vertical rolling mill, comprising a vertical roller frame (1), a balance beam (2), a vertical roller assembly (3) and two screw assemblies (4), wherein the vertical roller assembly (3) is arranged outside the balance beam (2), and the vertical roller assembly (3) is connected to two fastening rings (301) fixed to the balance beam (2) through bearings, and the two screw assemblies (4) penetrate the vertical roller frame (1) and are connected to the balance beam (2) through a pressure head body (5), characterized in that: It also includes two pull-back cylinders (6); The two pull-back oil cylinders (6) are respectively arranged at the top and bottom between the vertical roller frame (1) and the balance beam (2); the housing end of the pull-back oil cylinder (6) is fixed to the vertical roller frame (1) via a fixing seat (601); and the output ends of the two pull-back oil cylinders (6) are respectively connected to the top and bottom of the balance beam (2) via a hinge seat (602); A connecting rod (7) is provided between the two pressing head bodies (5); a flange (501) is provided on the side surface of the pressing head body (5); and the connecting rod (7) and the flange (501) are rotatably connected via a pin; The top of the vertical roller assembly (3) is open, a support ring (302) is fixed to the top of the vertical roller assembly (3) via a flange, a cover plate (303) is provided on the top of the support ring (302), one side of the cover plate (303) is rotatably connected to the support ring (302) via a rotating member, a fastening screw (304) is passed through the other side of the cover plate (303), a nut (305) is provided on the inner side of the top of the support ring (302), and the cover plate (303) is fixed to the support ring (302) via the fastening screw (304) and the nut (305); An inner convex edge is provided on the inner side of the upper surface of the support ring (302), and a seal is provided between the upper surface of the support ring (302) and the cover plate (303).

2. A pull-back balancing device for a vertical rolling mill according to claim 1, characterized in that: A group of pin sleeves (201) are fixedly passed through the balance beam (2), and a pin shaft passing through the pin sleeves (201) is provided on the fastening ring (301), and the pin shaft is connected to the pressure head body (5).

3. A pull-back balancing device for a vertical rolling mill according to claim 1, characterized in that: An end ear (603) cooperating with the hinge seat (602) is provided at the end of the pull-back oil cylinder (6), an upper telescopic protective sleeve (604) is provided between the end ear (603) and the end of the casing of the pull-back oil cylinder (6), and the upper telescopic protective sleeve (604) is sleeved on the outside of the output end rod of the pull-back oil cylinder (6).

4. A pull-back balancing device for a vertical rolling mill according to claim 1, characterized in that: A lower telescopic protective sleeve (8) is fixed between the pressure head body (5) and the vertical roller frame (1), and the lower telescopic protective sleeve (8) is sleeved on the outside of the lead screw assembly (4) between the pressure head body (5) and the vertical roller frame (1).

5. A pull-back balancing device for a vertical rolling mill according to claim 4, characterized in that: A guide rod (9) is provided between the balance beam (2) and the vertical roller frame (1) and at a position outside the lead screw assembly (4); one end of the guide rod (9) is connected to the balance beam (2) via a support (901); the other end of the guide rod (9) penetrates the vertical roller frame (1) and is slidably connected to the vertical roller frame (1); a plurality of outer edge rings (801) are provided on the side surface of the lower telescopic protective cover (8); and a through opening (802) is provided on the outer edge ring (801) for slidingly fitting along the guide rod (9).

6. A pull-back balancing device for an upright rolling mill according to claim 5, characterized in that: A plurality of rollers (803) are embedded in the through opening (802), and the plurality of rollers (803) all roll along the outer surface of the guide rod (9).

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