CN210358555U

CN210358555U - Lower guide and guard device of vertical rolling mill with guide roll

Info

Publication number: CN210358555U
Application number: CN201921357091.9U
Authority: CN
Inventors: 漆小虎; 赵伟; 高林
Original assignee: China Erzhong Group Deyang Heavy Industries Co Ltd
Current assignee: Erzhong Deyang Heavy Equipment Co Ltd; China Erzhong Group Deyang Heavy Industries Co Ltd
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-04-21
Anticipated expiration: 2029-08-20

Abstract

The utility model discloses a take edger mill of guide roll to lead and defend device down, including leading and defending the frame, the top of leading and defending the frame has set gradually entry guide plate, guide roller subassembly and export guide plate, entry guide plate and the equal level setting of export guide plate, guide roller subassembly includes the guide roll, the axle journal at guide roller both ends passes through the bearing and installs on leading and defending the frame. The guide roller assembly is used for replacing a steel plate, when the plate blank passes through, the friction between the guide roller assembly and the plate blank is rolling friction, the surface scratch area of the plate blank in the rolling process is reduced, and the product quality is improved. In addition, the device is simple in structure, low in modification cost and capable of being popularized rapidly.

Description

Lower guide and guard device of vertical rolling mill with guide roll

Technical Field

The utility model relates to a rolling mill field, concretely relates to take edger mill of guide roll to lead and defend device down.

Background

In a conventional hot-rolled strip production line, vertical rolls are used for width adjustment of a slab, and the direction of rolling force is the slab width direction. Because the distance between the inlet rollgang and the outlet rollgang of the vertical rolling mill is large (many are more than 2000 mm), a lower guide device is often required to be arranged in the vertical rolling mill for conveying slabs and supporting the slabs in the rolling process. The traditional lower guide and guard device of the vertical rolling mill adopts a steel plate welding structure. Because the lower guide is fixed in the vertical roll stand, in the rolling process, sliding friction between metals can be formed between the lower surface of the plate blank and the upper surface of the lower guide, a contact surface can generate larger sliding friction force, the surface of the plate blank is easily scratched, and the quality of a final product and the enterprise benefit are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a take edger mill of guide roll to lead and defend device down is provided, reduces the slab surface fish tail area among the rolling process, improves product quality.

The utility model provides a technical scheme that technical problem adopted is: take edger mill of guide roll to lead and defend device down, including leading and defending the frame, the top of leading and defending the frame has set gradually entry guide plate, guide roller subassembly and export guide plate, the equal level setting of entry guide plate and export guide plate, guide roller subassembly includes the guide roller, the axle journal at guide roller both ends passes through the bearing and installs on leading and defending the frame.

Further, the bearing is installed in the bearing frame, and the bearing frame is installed on the guide frame.

Furthermore, an outer end cover is arranged at the outer end of the bearing seat, a transparent cover is arranged at the inner end of the bearing seat, a bearing outer ring at one end of the guide roller is pressed and positioned by the outer end cover and the transparent cover, and gaps are respectively reserved between two ends of the bearing outer ring at the other end of the guide roller and the outer end cover and between two ends of the bearing outer ring at the other end of the guide roller and the transparent cover; and the end part of the journal is provided with a shaft end baffle, and the inner ring of the bearing is pressed and positioned by the shaft end baffle and a shaft shoulder at the journal.

Furthermore, the bearing seat is provided with a lubricating oil supply hole communicated with the bearing.

Furthermore, a water seal is arranged between the transparent cover and the end face of the guide roller, and an oil seal is arranged between the transparent cover and the shaft neck.

Furthermore, O-shaped sealing rings are arranged between the outer end cover and the inner wall of the bearing seat and between the transparent cover and the inner wall of the bearing seat.

Furthermore, the end face of the guide roller is provided with a wear-resisting ring, and the water seal is in contact with the wear-resisting ring.

Furthermore, the bearing seat is combined on the guide frame through a stud and a cylindrical nut.

Further, hard alloy layers are welded on the upper surfaces of the inlet guide plate and the outlet guide plate in a stacking mode.

Furthermore, installation sliding plates are arranged on two sides of the guide frame.

Compared with the prior art, the beneficial effects of the utility model are that: the guide roller assembly is used for replacing a steel plate, when the plate blank passes through, the friction between the guide roller assembly and the plate blank is rolling friction, the surface scratch area of the plate blank in the rolling process is reduced, and the product quality is improved. In addition, the device is simple in structure, low in modification cost and capable of being popularized rapidly.

Drawings

FIG. 1 is a schematic front view of the apparatus;

FIG. 2 is a schematic sectional view A-A of FIG. 1;

reference numerals: 1-a guide frame; 2-entrance guide plate; 3-a guide roller assembly; 31-a guide roller; 32-journal; 33-a bearing; 34-a bearing seat; 35-an outer end cover; 36-shaft end baffle; 37-transparent cover; 38, water sealing; 39-lubricating oil feed hole; 310, oil sealing; 311-O-ring seal; 312 — wear ring; 4-outlet guide plate; and 5, mounting a sliding plate.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

The utility model discloses a take edger mill of guide roll to lead and defend device down, as shown in fig. 1 and fig. 2, including leading and defending frame 1, the top of leading and defending frame 1 has set gradually entry guide plate 2, guide roller subassembly 3 and export guide plate 4, entry guide plate 2 and export guide plate 4 average level set up, guide roller subassembly 3 includes guide roller 31, the axle journal 32 at guide roller 31 both ends passes through bearing 33 and installs on leading and defending frame 1.

An inlet guide plate 2 and an outlet guide plate 4 are welded on the top of the guide frame 1, the inlet guide plate 2 is positioned at the inlet conveying roller way of the vertical roller mill, and the outlet guide plate 4 is positioned at the outlet conveying roller way of the vertical roller mill. In order to improve the wear resistance of the inlet guide plate 2 and the outlet guide plate 4, a hard alloy layer may be deposited on the upper surfaces of the inlet guide plate 2 and the outlet guide plate 4 to improve the service life of the inlet guide plate 2 and the outlet guide plate 4. The guide roller 31 is plural, for example, two. The guide roller 31 is matched with the bearing 33 through the shaft journals 32 at two ends, so that the guide roller 31 can rotate freely, when the slab moves relative to the guide roller 31, the friction between the slab and the guide roller is rolling friction instead of sliding friction, the friction force is small, the lower surface of the slab can be prevented from being scratched, and the quality of the slab is improved. The upper surface of entry guide plate 2 is slightly less than edger mill entry conveying roller way face, the upper surface of export guide plate 4 is slightly less than edger mill export conveying roller way face, the upper surface at entry guide plate 2 and export guide plate 4 both ends sets up the inclined plane of direction, the top height of guide roll 31 is slightly more than the upper surface height of entry guide plate 2 and export guide plate 4, in the transportation process of slab, mainly by guide roll 31 support slab, entry guide plate 2 and export guide plate 4 play the effect of auxiliary stay, can reduce the slab and be scratched the probability when sliding on entry guide plate 2 and export guide plate 4.

In order to facilitate the integral installation of the device on the stand of the vertical rolling mill, installation sliding plates 5 are arranged on two sides of the guide frame 1. Installation slide 5 welds on guide frame 1, and during installation, change this device and the relevant part of maintenance edger roll, installation slide 5 can with the relative slip between the edger roll frame slide, and the slip direction perpendicular to slab traffic direction provides maintenance space or realizes the position adjustment. The guide frame 1 is connected with a frame of the vertical rolling mill through positioning mechanisms such as positioning pins and the like, and the stability of the device is ensured in the rolling process. In order to facilitate the hoisting of the device, hoisting holes are arranged on the guide frame 1.

In order to facilitate the installation of the bearing 33, the bearing 33 is installed in a bearing seat 34, the bearing seat 34 is installed on the guide frame 1, specifically, an installation groove of the bearing seat 34 can be arranged on the guide frame 1, the bearing seat 34 is fixed in the installation groove through a positioning mechanism such as a positioning spigot, as an optimal technical scheme, the bearing seat 34 is closed on the guide frame 1 through a stud and a cylindrical nut, the upper part of the stud is locked through a nut, the lower part of the stud is locked through the cylindrical nut installed in the guide frame 1, and the top of the stud is provided with a flat head for dismounting. This allows for easy removal of the bearing housing 34 during installation for later maintenance.

The bearing 33 uses a single-row or double-row self-aligning roller bearing or a conical roller bearing according to actual working conditions, the outer ring of the double-row bearing is provided with a lubricating oil groove and a lubricating hole, and a lubricating oil supply hole 39 communicated with the bearing 33 is arranged on the bearing seat 34 and used for injecting lubricating oil into the bearing 33 so as to ensure good lubrication. In order to ensure the normal rotation of the guide roller 31, the inner ring and the outer ring of the bearing 33 at one end of the guide roller 31 are fixed, the inner ring of the bearing 33 at the other end of the guide roller 31 is fixed, and the outer ring can move within a certain range, when the roller expands due to heat, the bearing 33 at one end has a certain axial movement amount, so that the bearing 33 is prevented from being locked. In order to achieve the purpose, the outer end of the bearing seat 34 is provided with an outer end cover 35, the inner end of the bearing seat 34 is provided with a transparent cover 37, the outer ring of the bearing 33 at one end of the guide roller 31 is pressed and positioned by the outer end cover 35 and the transparent cover 37, and gaps are respectively reserved between the two ends of the outer ring of the bearing 33 at the other end of the guide roller 31 and the outer end cover 35 and the transparent cover 37; the end of the journal 32 is provided with a shaft end baffle 36, and the inner ring of the bearing 33 is pressed and positioned by the shaft end baffle 36 and a shaft shoulder at the journal 32. The outer end cover 35 and the transparent cover 37 which are positioned at two ends of the same bearing seat 34 are connected through bolts. The inner ring of the bearing 33 is pressed by the shaft end baffle 36, and the function of fixing the inner ring of the bearing 33 is realized. The outer ring of the bearing 33 at one end of the guide roller 31 is pressed by the outer end cover 35 and the transparent cover 37, so that the outer ring of the bearing 33 is kept fixed and can not rotate, and the outer ring of the bearing 33 at the other end of the guide roller 31 is not fastened, so that the outer ring can axially move within a certain range. As shown in fig. 2, the outer ring of the bearing 33 on the left side in fig. 2 is allowed to run, and the outer ring of the bearing 33 on the right side is kept fixed.

In order to avoid leakage of lubricating oil and ensure good waterproof, dustproof and lubricating effects, a water seal 38 is arranged between the transparent cover 37 and the end face of the guide roller 31, an oil seal 310 is arranged between the transparent cover 37 and the journal 32, and O-ring seals 311 are arranged between the outer end cover 35 and the inner wall of the bearing seat 34 and between the transparent cover 37 and the inner wall of the bearing seat 34. The water seal 38, the oil seal 310 and the O-ring 311 may be of any conventional sealing structure.

In order to ensure the sealing effect, the water seal 38 is in close contact with the end surface of the guide roller 31, and when the end surface of the guide roller 31 rotates, the end surface is worn to cause sealing failure, so that the end surface of the guide roller 31 is provided with a wear-resistant ring 312, and the water seal 38 is in contact with the wear-resistant ring 312. The wear-resistant ring 312 is a circular wear-resistant plate and is mounted in an annular groove on the end face of the guide roller 31 through a screw, and a detachable sealant is coated on the contact surface of the wear-resistant ring 312 and the annular groove. The wear-resistant ring 312 is wear-resistant, and the water seal 38 is tightly contacted with the wear-resistant ring 312, so that the maintaining time of the seal can be prolonged. In addition, after the wear-resistant ring 312 is worn, a new wear-resistant ring 312 can be conveniently replaced, and the convenience of maintenance is increased.

The device has the following advantages:

1. the guide roller assembly 3 is adopted, and the guide roller 31 is slightly higher than the guide surface, so that the guide roller is used as a main conveying and supporting mechanism to convert sliding friction force into rolling friction force when a plate blank passes through, and scratches on the surface of the plate blank are greatly reduced.

2. The guide roller 31 is an independent assembly component, all assembly parts can be independently replaced, and the maintenance cost is low.

3. Simple structure, low investment cost and convenient popularization. The lower guide and guard device with the guide rollers for the vertical rollers has the advantages of low new investment and transformation investment, high transformation feasibility and capability of realizing rapid popularization.

Claims

1. Take edger mill of guide roll to lead and defend device down, including leading and defending frame (1), its characterized in that, the top of leading and defending frame (1) has set gradually entry guide and defend board (2), guide roll subassembly (3) and export guide and defend board (4), entry guide and defend board (2) and the equal level setting of export guide and defend board (4), guide roll subassembly (3) are including guide roll (31), journal (32) at guide roll (31) both ends are installed on leading and defending frame (1) through bearing (33).

2. A edger lower guide with guide rolls according to claim 1, characterized in that the bearing (33) is mounted in a bearing housing (34), which bearing housing (34) is mounted on the guide frame (1).

3. The lower guide and guard device of the vertical rolling mill with the guide roll is characterized in that an outer end cover (35) is arranged at the outer end of the bearing seat (34), a transparent cover (37) is arranged at the inner end of the bearing seat (34), the outer ring of the bearing (33) at one end of the guide roll (31) is pressed and positioned by the outer end cover (35) and the transparent cover (37), and gaps are reserved between the two ends of the outer ring of the bearing (33) at the other end of the guide roll (31) and the outer end cover (35) and the transparent cover (37) respectively; and a shaft end baffle (36) is arranged at the end part of the journal (32), and an inner ring of the bearing (33) is pressed and positioned by the shaft end baffle (36) and a shaft shoulder at the position of the journal (32).

4. A lower guide and guard device of a vertical rolling mill with guide rolls according to claim 3, characterized in that the bearing housing (34) is provided with a lubricating oil feed hole (39) communicated with the bearing (33).

5. The lower guide and guard device of the vertical rolling mill with the guide roll is characterized in that a water seal (38) is arranged between the transparent cover (37) and the end face of the guide roll (31), and an oil seal (310) is arranged between the transparent cover (37) and the journal (32).

6. The lower guide and guard device of the vertical rolling mill with the guide rolls as claimed in claim 3, characterized in that O-shaped sealing rings (311) are arranged between the outer end cover (35) and the inner wall of the bearing seat (34) and between the transparent cover (37) and the inner wall of the bearing seat (34).

7. The lower guide and guard device of a vertical rolling mill with guide rolls according to claim 5, characterized in that the end surface of the guide roll (31) is provided with a wear ring (312), and the water seal (38) is in contact with the wear ring (312).

8. The lower guide and guard device of a vertical rolling mill with guide rolls according to claim 2, characterized in that the bearing seat (34) is fastened to the guide and guard frame (1) by means of a stud and a cylindrical nut.

9. The lower guide device of a vertical rolling mill with guide rolls according to claim 1, characterized in that the upper surfaces of the inlet guide plate (2) and the outlet guide plate (4) are welded with a hard alloy layer.

10. A lower guide and guard device of a vertical rolling mill with guide rolls according to claim 1, characterized in that the guide and guard frame (1) is provided with mounting skids (5) on both sides.