CN215355333U

CN215355333U - Roller box for high-speed rolling mill

Info

Publication number: CN215355333U
Application number: CN202122130876.6U
Authority: CN
Inventors: 靳党林
Original assignee: Xi'an Weikeduo Electrical & Mechanical Equipment Co ltd
Current assignee: Xi'an Weikeduo Electrical & Mechanical Equipment Co ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2021-12-31
Anticipated expiration: 2031-09-06

Abstract

The utility model discloses a roller box for a high-speed rolling mill, which comprises a cooling water pipe, a roller gap adjusting mechanism, a roller shaft, a roller box panel, a roller box body and two eccentric sleeves, wherein the roller shaft consists of a right-handed roller shaft and a left-handed roller shaft which are symmetrical, the right-handed roller shaft and the left-handed roller shaft are arranged in the two eccentric sleeves, two ends of the right-handed roller shaft and two ends of the left-handed roller shaft are respectively sleeved with a large-end oil film bearing and a small-end oil film bearing, and one ends of the right-handed roller shaft and the left-handed roller shaft, which face the direction of the small-end oil film bearing, are also sleeved with rolling bearings; this roll box has faster rolling speed, guarantees to bear higher load, condenser tube and is good in order to guarantee the cooling under the high-speed heavy load condition, accomplishes twice sizing process function in the process flow through the roll box simultaneously, directly rolls into the required size with the steel after the finishing mill processing to can guarantee size precision and material performance accurately, effectual promotion work efficiency.

Description

Roller box for high-speed rolling mill

Technical Field

The utility model belongs to the technical field of high-speed wire rod finish rolling reducing mills, and particularly relates to a roller box for a high-speed rolling mill.

Background

The rolling mill is equipment for realizing a metal rolling process, and generally refers to equipment for completing the whole process of rolled material production, wherein a roller box is one of accessories in the rolling mill, the roller box is mainly used for rolling wire rod round steel or threaded steel with the diameter of 5.5-12 mm, the maximum rolling speed can reach 110m/s, and the stable running speed is 100 m/s.

The existing roller box is low in working speed in actual processing, cannot meet production requirements, is low in self bearing load, and can cause the rise of the integral temperature of a machine and further damage equipment in case of large load capacity and easy occurrence of processing faults and mechanical damage.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a roll cassette for a high speed rolling mill to solve the problems set forth in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: the roll box for the high-speed rolling mill comprises a cooling water pipe, a roll gap adjusting mechanism, roll shafts, a roll box panel, a roll box body and two eccentric sleeves, wherein the roll shafts comprise a right-handed roll shaft and a left-handed roll shaft which are symmetrical, the right-handed roll shaft and the left-handed roll shaft are arranged inside the two eccentric sleeves, a large-end oil film bearing and a small-end oil film bearing are respectively sleeved at two ends of the right-handed roll shaft and the left-handed roll shaft, rolling bearings are further sleeved at one ends of the right-handed roll shaft and the left-handed roll shaft facing the direction of the small-end oil film bearing, a steel rolling roll ring and a taper sleeve are sequentially sleeved at one ends of the right-handed roll shaft and the left-handed roll shaft facing the direction of the large-end oil film bearing, the taper sleeves are positioned outside the steel rolling roll ring, and a water outlet of the cooling water pipe extends to the central position of the steel roll ring.

Preferably, the rolling bearing is arranged on one side of the small-end oil film bearing facing the outer parts of the right-handed roller shaft and the left-handed roller shaft; the lower surface of the roller box panel is connected with an external cone box, a positioning pin shaft is connected between the lower surface of the roller box panel and the external cone box, and the helical gears on the right-handed roller shaft and the left-handed roller shaft are meshed with the helical gears of the cone box.

Preferably, the roll gap adjusting mechanism comprises an adjusting screw rod and fixing nuts, the fixing nuts are sleeved on the surface of the adjusting screw rod and are in threaded connection with the adjusting screw rod, the number of the fixing nuts is equal to that of the eccentric sleeves, and each fixing nut is connected with one of the eccentric sleeves.

Preferably, the eccentric distance exists between the center of the eccentric sleeve and the centers of the right-handed roller shaft and the left-handed roller shaft.

Preferably, the protective sleeves are sleeved at one ends, facing the taper sleeves, of the right-handed rolling roll shaft and the left-handed rolling roll shaft, and the protective sleeves are fixed with the end faces of the right-handed rolling roll shaft and the left-handed rolling roll shaft through bolts.

Preferably, the large-end oil film bearing and the small-end oil film bearing are arranged on the eccentric sleeve, and the inner hole of the eccentric sleeve is in interference fit with the large-end oil film bearing and the small-end oil film bearing.

Preferably, the roller box body passes through the bolt fastening with the roller box panel, eccentric cover has relative main aspects and tip, and wherein eccentric cover main aspects external diameter is connected with the cooperation of roller box panel, eccentric cover tip external diameter is connected with the cooperation of roller box body, set up the hole that the centre of a circle is in the collinear on hole on the roller box panel and the roller box body, the both ends of eccentric cover are in the inside in two holes.

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

through the design of the utility model, the roller box has higher rolling speed, ensures that the roller box bears higher load and the cooling water pipe ensures good cooling under the condition of high speed and heavy load, simultaneously completes two sizing process functions in the process flow through the roller box, directly rolls the steel processed by the finishing mill into the required size, can accurately ensure the size precision and the material performance, and effectively improves the working efficiency.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a side cross-sectional view of the present invention;

FIG. 3 is a schematic view of the installation of the eccentric sleeve of the present invention;

FIG. 4 is a schematic view of the right hand and left hand roll shafts of the present invention at a minimum center-to-center distance;

FIG. 5 is a schematic view of the right-hand and left-hand roll shafts of the present invention at maximum center-to-center distance.

In the figure: 1. a roller box panel; 2. a cooling water pipe; 3. a roller box body; 4. a right-handed roll shaft; 5. a left-hand roll shaft; 6. a large-end oil film bearing; 7. positioning a pin shaft; 8. a steel rolling roll collar; 9. an eccentric sleeve; 10. a protective cap; 11. a rolling bearing; 12. adjusting a lead screw; 13. a taper sleeve; 14. a small-end oil film bearing; 15. fixing a nut; 16. a large nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a technical solution: a roller box for a high-speed rolling mill comprises a cooling water pipe 2, a roller gap adjusting mechanism, a roller shaft, a roller box panel 1, a roller box body 3 and two eccentric sleeves 9, wherein the roller shaft is composed of a right-handed roller shaft 4 and a left-handed roller shaft 5 which are symmetrical, the right-handed roller shaft 4 and the left-handed roller shaft 5 are arranged inside the two eccentric sleeves 9, a large-end oil film bearing 6 and a small-end oil film bearing 14 are respectively sleeved at two ends of the right-handed roller shaft 4 and the left-handed roller shaft 5, a rolling bearing 11 is further sleeved at one end of the right-handed roller shaft 4 and one end of the left-handed roller shaft 5 facing to the small-end oil film bearing 14, radial and axial positioning is realized through the large-end oil film bearing 6, the small-end oil film bearing 14 and the rolling bearing 11, a cone sleeve 13 and a steel rolling roller ring 8 are arranged at the ends of the right-handed roller shaft 4 and the left-handed roller shaft 5 to realize a steel rolling process, and one ends of the right-handed roller shaft 4 and the left-handed roller shaft 5 facing to the large-end are sequentially sleeved with a steel rolling roller ring 8 and a steel rolling ring 8 13, wherein the taper sleeve 13 is positioned outside the rolling roll collar 8, and the water outlet of the cooling water pipe 2 extends to the central position of the rolling roll collar 8, thereby cooling the rolling roll collar 8 by cooling water.

In the present embodiment, it is preferable that the rolling bearing 11 is located on the side of the small-end oil film bearing 14 facing the outside of the right-hand roller shaft 4 and the left-hand roller shaft 5; the lower surface of the roller box panel 1 is connected with an external cone box, a positioning pin shaft 7 is connected between the lower surface and the external cone box, and helical gears on the right-handed roller shaft 4 and the left-handed roller shaft 5 are meshed with the helical gears of the cone box.

In this embodiment, preferably, the roll gap adjusting mechanism includes an adjusting screw 12 and a fixing nut 15, two sets of eccentric sleeves 9 adjust the eccentric distance through the roll gap adjusting mechanism to realize the change of the center distance between the right-handed roll shaft 4 and the left-handed roll shaft 5, so as to realize rolling of steel products with different specifications and sizes, the fixing nut 15 is sleeved on the surface of the adjusting screw 12 and is in threaded connection with the adjusting screw, the fixing nut 15 is driven to advance by adjusting the mutual rotation of the screw 12 and the fixing nut 15, the fixing nut 15 drives the eccentric sleeves 9 to rotate to form a certain rotation angle, the centers of the eccentric sleeves 9, the right-handed roll shaft 4 and the left-handed roll shaft 5 are designed with 12mm eccentric distance, the center distance between the right-handed roll shaft 4 and the left-handed roll shaft 5 is adjusted by the rotation of the eccentric sleeves 9, the maximum and minimum adjustment sizes and angles are adjusted, the number of the fixing nuts 15 is equal to the number of the eccentric sleeves 9, and each fixing nut 15 is connected with one of the eccentric sleeves 9.

In this embodiment, preferably, a protective sleeve 10 is sleeved outside one end of the right-handed roll shaft 4 and one end of the left-handed roll shaft 5 facing the taper sleeve 13, and the protective sleeve 10 is fixed to the end faces of the right-handed roll shaft 4 and the left-handed roll shaft 5 through bolts and is connected with the secondary compression steel rolling roll collar 8 through bolts.

In this embodiment, preferably, the large-end oil film bearing 6 and the small-end oil film bearing 14 are mounted on the eccentric sleeve 9, and an inner hole of the eccentric sleeve 9 is in interference fit with the large-end oil film bearing 6 and the small-end oil film bearing 14.

In this embodiment, preferably, the roller housing 3 and the roller housing panel 1 are fixed by bolts, the eccentric sleeve 9 has a large end and a small end opposite to each other, wherein the outer diameter of the large end of the eccentric sleeve 9 is connected with the roller housing panel 1 in a matching manner, the outer diameter of the small end of the eccentric sleeve 9 is connected with the roller housing 3 in a matching manner, holes with the centers on the same straight line are formed in the holes on the roller housing panel 1 and the roller housing 3, and two ends of the eccentric sleeve 9 are located inside the two holes.

The working principle and the using process of the utility model are as follows: when the utility model is used, a steel rolling roller ring 8 is mutually wedged with the conical surfaces of a right-handed roller shaft 4 and a left-handed roller shaft 5 through the conical surface of a conical sleeve 13 to transmit torque, the wedging force is provided by a large pre-tightening nut 16, the right-handed roller shaft 4 and the left-handed roller shaft 5 penetrate through the middle of an eccentric sleeve 9, a large-end oil film bearing 9 and a small-end oil film bearing 14 are used for radially fixing two ends of the right-handed roller shaft 4 and the left-handed roller shaft 5, two angular contact bearings are used for axially fixing, a common bearing cannot bear large radial force due to very large rolling moment, so that the large-end oil film bearing 6 and the small-end oil film bearing 14 are used for bearing, the large-end oil film bearing 6 and the small-end oil film bearing 14 are arranged on the eccentric sleeve 9, the inner hole of the eccentric sleeve 9 is in interference fit with the large-end oil film bearing 6 and the small-end oil film bearing 14, and the right-handed roller shaft 4 and the left-handed roller shaft 5 and the large-end oil film bearing 6 and the small-end oil film bearing 14 are in high-speed return-to-return manner The oil is loaded and lubricated by a low-pressure oil film.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a roller box for high-speed rolling mill, includes cooling water pipe (2), roll gap guiding mechanism, roll axle, roller box panel (1), roller box body (3) and two eccentric sleeves (9), its characterized in that: the roll shaft consists of a right-handed roll shaft (4) and a left-handed roll shaft (5) which are symmetrical, the right-handed roll shaft (4) and the left-handed roll shaft (5) are arranged in the two eccentric sleeves (9), and a big end oil film bearing (6) and a small end oil film bearing (14) are respectively sleeved at the two ends of the right rotary rolling roll shaft (4) and the left rotary rolling roll shaft (5), rolling bearings (11) are further sleeved at one ends of the right-handed rolling roll shaft (4) and the left-handed rolling roll shaft (5) facing the direction of the small-end oil film bearing (14), one ends of the right-handed roll shaft (4) and the left-handed roll shaft (5) facing the direction of the large-end oil film bearing (6) are sequentially sleeved with a steel rolling roll collar (8) and a taper sleeve (13), wherein the taper sleeve (13) is positioned outside the steel rolling roll collar (8), and the water outlet of the cooling water pipe (2) extends to the central position of the steel rolling roll collar (8).

2. A roll cage for a high speed mill according to claim 1, characterized in that: the rolling bearing (11) is positioned on one side of the small-end oil film bearing (14) facing the outer parts of the right-handed rolling shaft (4) and the left-handed rolling shaft (5); the lower surface of the roller box panel (1) is connected with an external cone box, a positioning pin shaft (7) is connected between the roller box panel and the external cone box, and helical gears on the right-handed rolling roller shaft (4) and the left-handed rolling roller shaft (5) are meshed with the helical gears of the cone box.

3. A roll cage for a high speed mill according to claim 1, characterized in that: the roll gap adjusting mechanism comprises an adjusting screw rod (12) and fixing nuts (15), the fixing nuts (15) are sleeved on the surface of the adjusting screw rod (12) and are in threaded connection, the number of the fixing nuts (15) is equal to that of the eccentric sleeves (9), and each fixing nut (15) is connected with one of the eccentric sleeves (9) respectively.

4. A roll cage for a high speed mill according to claim 3, characterized in that: the center of the eccentric sleeve (9) has an eccentric distance with the centers of the right-handed roll shaft (4) and the left-handed roll shaft (5).

5. A roll cage for a high speed rolling mill according to claim 4, characterized in that: dextrorotation roll axle (4) and levogyration roll axle (5) are equipped with protective sheath (10) towards the outside cover of one end of taper sleeve (13), and protective sheath (10) pass through the bolt fastening with the terminal surface of dextrorotation roll axle (4) and levogyration roll axle (5).

6. A roll cage for a high speed mill according to claim 1, characterized in that: the large-end oil film bearing (6) and the small-end oil film bearing (14) are arranged on the eccentric sleeve (9), and the inner hole of the eccentric sleeve (9) is in interference fit with the large-end oil film bearing (6) and the small-end oil film bearing (14).

7. A roll cage for a high speed mill according to claim 1, characterized in that: the roller box body (3) is fixed with the roller box panel (1) through bolts, the eccentric sleeve (9) is provided with a large end and a small end which are opposite to each other, wherein the outer diameter of the large end of the eccentric sleeve (9) is matched with the roller box panel (1) to be connected, the outer diameter of the small end of the eccentric sleeve (9) is matched with the roller box body (3) to be connected, holes in the roller box panel (1) and holes in the same straight line with the center of a circle are formed in the roller box body (3), and the two ends of the eccentric sleeve (9) are located in the two holes.