CN110883098A

CN110883098A - Compact closed rolling mill assembly structure

Info

Publication number: CN110883098A
Application number: CN201911199867.3A
Authority: CN
Inventors: 毛金刚; 王国柱; 叶力平; 景转珍; 韩丽娟; 牛健
Original assignee: Taizhong Coal Mining Machinery Co Ltd
Current assignee: Taizhong Coal Mining Machinery Co Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-03-17

Abstract

The invention discloses a compact closed rolling mill assembly structure, which belongs to rough and medium rolling areas in a steel mill line and a bar production line, performs primary and medium rolling on a blank to play a role of a cogging mill, and provides the technical field of high-precision blanks for a finishing mill. The invention effectively shortens the distance between the rolling mills from about 4 meters to about 3 meters in the aspect of the integral arrangement of the rolling mill trains, and shortens the distance of about 18 meters on the arrangement length of the integral production line.

Description

Compact closed rolling mill assembly structure

Technical Field

The invention belongs to a rough rolling area and a middle rolling area in a steel mill line and a bar production line, performs primary rolling and middle rolling on a blank, plays a role of a cogging mill, and provides the technical field of high-precision blanks for a finishing mill, in particular to a compact closed rolling mill assembly structure.

Background

With the gradual trend of the domestic steel rolling production line to a saturated state, the requirements for constructing a brand new production line are gradually reduced, the main development trend is to carry out diagnostic reconstruction on the old production line, and aiming at the current situation, enterprises select reconstruction on the basis of the old and old steel rolling production lines and make more and more full use of narrow workshop space in the expansion development plan of the enterprises. The most common closed rolling mill assembly structure form in China mainly comprises a rotary guide device, a rolling mill body, a connecting shaft bracket and the like, is scattered in arrangement, heavy in equipment weight, large in occupied area, short in service life of part of components, poor in steel rolling precision and incapable of meeting the structural requirements of the transformation of the current production line.

Disclosure of Invention

In order to solve the problems, the invention provides a compact closed rolling mill assembling structure.

The invention adopts the following technical scheme: the compact closed rolling mill assembly structure comprises a rolling mill body, a guide beam, a connecting shaft bracket and a rolling mill base, wherein the rolling mill body is mounted on the rolling mill base, the guide beam is mounted on the rolling mill body, and the movable connecting shaft bracket is mounted on a corresponding position on one side of the rolling mill body.

The rolling mill body comprises a roll changing trolley arranged below the interior of a rolling mill frame, a roller assembly is arranged on the roll changing trolley, the rolling mill frame is of a two-roller closed structure, T-shaped sliding grooves are symmetrically formed in two sides of the rolling mill frame, a rolling mill body trunnion is arranged at the bottom of the rolling mill frame, the front end of the roller assembly is a roller flat head, the roller assembly operation side is fixed with the rolling mill frame through a roller axial fixing device, the roller assembly comprises an upper working roller and a lower working roller, an elastic damping body is arranged between the upper working roller and the lower working roller, and a pressing device is arranged above the upper working roller.

Further, the guide beam is fixedly arranged on a T-shaped chute of the rolling mill frame; and a cooling water system is fixed at the upper part of the guide beam, dovetail grooves are formed in the upper side and the lower side of the guide beam, a pressing plate is installed on the outer side of each dovetail groove, a T-shaped bolt is arranged on each pressing plate, and the T-shaped bolt penetrates through the dovetail grooves to be fixedly connected with a T-shaped sliding groove of the rolling mill frame.

Further, the connecting shaft bracket comprises a basic frame, an upper connecting shaft, a lower connecting shaft, a bolt cylinder, a sliding plate groove and a balance adjusting device, wherein the upper connecting shaft and the lower connecting shaft which are connected with the flat head of the roller are installed on the basic frame, two sides of the upper connecting shaft and the lower connecting shaft are installed on the basic frame through the balance adjusting device, the sliding plate groove is arranged on two sides of the bottom of the basic frame, and the bolt cylinder which is connected with a trunnion of the rolling mill body is arranged on one side of the bottom of the.

Further, the rolling mill base comprises a base, a left locking cylinder, a right locking cylinder and a walking track, the base is located at the bottom of the rolling mill body and fixed on a civil engineering foundation through foundation bolts, the walking track is arranged on two sides of the base, and the left locking cylinder and the right locking cylinder which are used for being fixed with the rolling mill frame are installed on the walking tracks on the left side and the right side.

Compared with the prior art, the invention has the following beneficial effects:

1. the spindle bracket is designed into a follow-up structure, is always connected with the universal joint shaft and participates in rolling together with the rolling mill body, and the structural form of the spindle bracket has the functions of self-adaptive adjustment and independent adjustment so as to meet all requirements during online roll changing and accident handling. The universal joint has the advantages that the impact on the bearing caused by the swinging of the universal joint shaft is reduced, the service lives of the universal joint shaft, the bearing and the bearing seat are prolonged, and the size precision of a rolled piece is also improved;

2. the rolling mill static base is provided with a special walking track, a slide plate groove structure is additionally arranged, and the rolling mill static base is used for guiding the front and back movement of the connecting shaft bracket and preventing the connecting shaft bracket from tipping and jumping.

3. The mill body housing is provided with the trolley walking track and the guide beam mounting structure, so that the mill body housing and the guide beam are combined into a whole, the structure is compact, and the occupied area is small.

4. The guide beam device is designed into a suspension type guide by the traditional rotary guide, and the guide beam can be adjusted up, down, left and right to ensure the centering of the rolling central line, and is integrally assembled with the rolling mill housing, so that the structure is compact, and the rigidity of the rolling mill is improved.

The rolling line of the rolling mill assembly structure is fixed when the hole patterns are changed, the hole patterns are changed by transversely moving the rolling mill body through the hydraulic cylinder and the spindle bracket together, the butt joint of the roller and the universal spindle is facilitated, and the online operation rate is improved. In the aspect of overall arrangement of the rolling mill train, the distance between the rolling mills is effectively shortened from about 4 meters to about 3 meters conventionally, and the distance of about 18 meters is shortened on the arrangement length of the overall production line.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a side view of the structure of the present invention;

FIG. 3 is a front view of the mill body;

FIG. 4 is a side view of the mill body;

FIG. 5 is a schematic view of a guide beam structure;

FIG. 6 is a schematic view of the installation of the guide beam;

FIG. 7 is a front view of the spindle bracket;

FIG. 8 is a side view of the spindle bracket;

FIG. 9 is a top view of the mill base;

FIG. 10 is a side view of a mill base;

in the figure, 1-a rolling mill body, 2-a guide beam, 3-a connecting shaft bracket, 4-a rolling mill base, 1.1-a rolling mill frame, 1.2-a screw-down device, 1.3-a roller assembly, 1.31-a roller flat head, 1.4-a roller axial fixing device, 1.5-a roller changing trolley, 1.6-a T-shaped chute, 1.7-a rolling mill body trunnion, 1.8-an elastic damping body, 2.1-a cooling water system, 2.2-a dovetail groove, 2.3-a pressing plate, 2.4-a T-shaped bolt, 3.1-a basic frame, 3.2-an upper connecting shaft and a lower connecting shaft, 3.3-a bolt cylinder, 3.4-a sliding plate groove, 3.5-a balance adjusting device, 4.1-a base, 4.2-a left locking cylinder, 4.3-a right locking cylinder and 4.4-a walking track.

Detailed Description

As shown in fig. 1 and 2, a compact closed rolling mill assembly structure comprises a rolling mill body 1, a guide beam 2, a spindle bracket 3 and a rolling mill base 4, wherein the rolling mill body 1 is mounted on the rolling mill base 4, the guide beam 2 is mounted on the rolling mill body 1, and the spindle bracket 3 is mounted on a corresponding position on one side of the rolling mill body 1 in a movable manner.

As shown in fig. 3 and 4, the rolling mill body 1 includes a roll changing trolley 1.5 arranged at the inner lower part of the rolling mill frame 1.1, a roll assembly 1.3 is arranged on the roll changing trolley 1.5, the rolling mill frame 1.1 is of a two-roll closed structure, T-shaped chutes 1.6 are symmetrically arranged at two sides of the rolling mill frame 1.1, a rolling mill body trunnion 1.7 is arranged at the bottom of the rolling mill frame 1.1, a roll assembly 1.3 is arranged on the rolling mill frame 1.1, the front end of the roll assembly 1.3 is a roll flat head 1.31, the operation side of the roll assembly 1.3 is fixed with the rolling mill frame 1.1 through a roll axial fixing device 1.4, the roll assembly 1.3 includes an upper working roll and a lower working roll, an elastic damping body 1.8 is arranged between the upper working roll and the lower working roll, and a screw-down device 1.2 is arranged. The screw-down device is arranged in an upper window of the frame, is of a worm gear-worm transmission structure and is used for realizing the functions of adjusting an upper roll gap and a lower roll gap and bearing rolling radial load; the assembly of the roller is composed of an upper working roller system and a lower working roller system, the upper balance and the lower balance of the roller are balanced by an elastic damping body of a guide sleeve, the elastic damping body is arranged between an upper roller bearing seat and a lower roller bearing seat and is used for eliminating a gap between parts of a pressing transmission system and slowing down the impact on equipment when a rolling mill rolls, an adjusting backing plate is arranged on the lower bearing seat and is used when the roller has different roller diameters, the axial adjustment of the upper roller is realized by a positive and negative spiral pair pull rod device, the axial fixation of the upper roller is locked by a positive and negative spiral pair, and; the roll changing trolley is of a steel plate welding structure and is arranged on a track below the inside of the rolling mill frame to play a role in changing the rolls.

As shown in fig. 5 and 6, the guide beam 2 is fixedly installed on a T-shaped chute 1.6 of the rolling stand 1.1; the upper part of the guide beam 2 is fixed with a cooling water system 2.1, the upper side and the lower side of the guide beam 2 are provided with dovetail grooves 2.2, the outer side of each dovetail groove 2.2 is provided with a pressure plate 2.3, the pressure plate 2.3 is provided with a T-shaped bolt 2.4, and the T-shaped bolt 2.4 penetrates through the pressure plate 2.3 to be fixedly connected with a T-shaped chute 1.6 of the rolling mill frame 1.1. The guide can be adjusted in six directions by utilizing the adjustability of the T-shaped bolt, the dovetail groove and the pressure plate so as to adapt to different specifications and guides, and the center line of the guide is superposed with the center line of rolling.

As shown in fig. 7 and 8, the spindle bracket 3 includes a basic frame 3.1, upper and lower spindles 3.2, a latch cylinder 3.3, a slide plate groove 3.4 and a balance adjusting device 3.5, the basic frame 3.1 is provided with the upper and lower spindles 3.2 connected with a roller flat head 1.31, two sides of the upper and lower spindles 3.2 are mounted on the basic frame 3.1 through the balance adjusting device 3.5, two sides of the bottom of the basic frame 3.1 are provided with the slide plate groove 3.4, and one side of the bottom of the basic frame 3.1 is provided with the latch cylinder 3.3 connected with a trunnion 1.7 of a rolling mill body. The basic frame is a welding structure, the upper and lower spigots have the function of self-balancing adjustment and the function of independent adjustment, the flat head of the roller is connected with the upper and lower spigots through the connection of the bolt cylinder and the trunnion of the rolling mill body, so that the upper and lower spigots participate in rolling along with the rotation of the roller, a slide plate groove structure is arranged below the upper and lower spigots and matched with the walking track of the rolling mill base, and the upper and lower spigots and the rolling mill body move left and right along the walking track on the rolling mill base without dislocation or tipping. The weight of the upper and lower spigots is balanced by the self-balancing device, the additional load of the upper and lower spigots to the roller transmission side bearing is eliminated, the stress of the roller elastic damping body is uniform, the following structure reduces the bounce of the rolling mill, and the steel rolling precision is improved.

As shown in fig. 9 and 10, the rolling mill base 4 includes a base 4.1, a left locking cylinder 4.2, a right locking cylinder 4.3 and a traveling rail 4.4, the base 4.1 is located at the bottom of the rolling mill body, the base 4.1 is fixed on a civil engineering foundation through anchor bolts, the traveling rail 4.4 is arranged at two sides of the base 4.1, and the traveling rail 4.4 at the left and right sides is internally provided with the left locking cylinder 4.2 and the right locking cylinder 4.3 for clamping the rolling mill frame 1.1. The base is located the rolling mill body lower part, fixes on the civil engineering basis with the rag bolt for support rolling mill body and spiale bracket and bear the rolling force. The locking cylinder is of a disc spring locking and hydraulic loosening structure and is arranged on the left side of the base of the rolling mill, the locking cylinder is loosened when the rolling mill moves transversely, and after the position of the rolling mill is adjusted, the frame is fixed on the rail seat through the locking cylinder, so that the strength and the rigidity of the body are improved. The walking tracks are arranged on two sides of the rolling mill base and used for guiding and fixing the spindle bracket and preventing the spindle bracket from jumping and tipping in a dislocation way.

The length of the whole production line (the distance is changed from 4 meters to 3 meters) is integrally shortened by 17 meters, and the structure is more suitable for being adopted by companies limited by sites; compared with the existing rolling mill, the equipment weight assembled by 18 rolling mills saves about 36 tons, and the early investment cost is low; the field operation is time-saving and convenient, the roller changing and adjusting time is saved by about 10 minutes from the prior 30 minutes, and the labor productivity is improved; the follow-up type of the spiale bracket participates in rolling, reduces the static load of about 1.5 tons (the weight of the cardan shaft is about 1.5 tons) for the bearing, effectively reduces the swing of the cardan shaft, reduces the bounce value of the rolling mill body, improves the precision of the blank (0.25 to 0.15-0.2), provides the high-precision blank for the finishing mill, prolongs the service life of the bearing and the bearing seat, reduces the storage capacity of spare parts and reduces the later-stage operation cost.

Claims

1. The utility model provides a compact closed rolling mill assembly structure which characterized in that: the automatic rolling machine comprises a rolling machine body (1), a guide and guard beam (2), a connecting shaft bracket (3) and a rolling machine base (4), wherein the rolling machine body (1) is installed on the rolling machine base (4), the guide and guard beam (2) is installed on the rolling machine body (1), and the movable connecting shaft bracket (3) is installed on the corresponding position on one side of the rolling machine body (1).

2. The compact closed rolling mill mounting structure of claim 1, wherein: the rolling mill body (1) comprises a roll changing trolley (1.5) arranged below a rolling mill frame (1.1), a roller assembly (1.3) is arranged on the roll changing trolley (1.5), the rolling mill frame (1.1) is of a two-roll closed structure, T-shaped sliding grooves (1.6) are symmetrically formed in two sides of the rolling mill frame (1.1), a rolling mill body trunnion (1.7) is arranged at the bottom of the rolling mill frame (1.1), the front end of the roller assembly (1.3) is a roller flat head (1.31), the operating side of the roller assembly (1.3) is fixed with the rolling mill frame (1.1) through a roller axial fixing device (1.4), the roller assembly (1.3) comprises an upper working roller and a lower working roller, an elastic damping body (1.8) is arranged between the upper working roller and the lower working roller, and a pressing device (1.2) is arranged above the upper working roller.

3. The compact closed-end mill mounting structure of claim 2, wherein: the guide and guard beam (2) is fixedly arranged on a T-shaped chute (1.6) of the rolling mill stand (1.1); a cooling water system (2.1) is fixed on the upper portion of the guide cross beam (2), dovetail grooves (2.2) are formed in the upper side and the lower side of the guide cross beam (2), a pressing plate (2.3) is installed on the outer side of each dovetail groove (2.2), T-shaped bolts (2.4) are arranged on the pressing plate (2.3), and the T-shaped bolts (2.4) penetrate through the pressing plate (2.3) to be fixedly connected with T-shaped sliding grooves (1.6) of the rolling mill frame (1.1).

4. The compact closed-end mill mounting structure of claim 3, wherein: the spindle bracket (3) comprises a basic frame (3.1), an upper spindle and a lower spindle (3.2), a bolt cylinder (3.3), a sliding plate groove (3.4) and a balance adjusting device (3.5), wherein the upper spindle and the lower spindle (3.2) connected with a roller flat head (1.31) are installed on the basic frame (3.1), two sides of the upper spindle and the lower spindle (3.2) are installed on the basic frame (3.1) through the balance adjusting device (3.5), the sliding plate groove (3.4) is arranged on two sides of the bottom of the basic frame (3.1), and the bolt cylinder (3.3) connected with a trunnion (1.7) of a rolling mill body is arranged on one side of the bottom of the basic frame (3.1).

5. The compact closed rolling mill mounting structure of claim 4, wherein: rolling mill base (4) including base (4.1), left locking jar (4.2), right locking jar (4.3) and walking track (4.4), base (4.1) are located rolling mill body bottom, base (4.1) are fixed on the civil engineering basis through rag bolt, walking track (4.4) are arranged in the both sides of base (4.1), install in walking track (4.4) of the left and right sides and be used for pressing from both sides left locking jar (4.2) and right locking jar (4.3) of tight rolling mill frame (1.1).