CN110195815B

CN110195815B - Vertical rolling mill side pressure thrust unit

Info

Publication number: CN110195815B
Application number: CN201810156246.6A
Authority: CN
Inventors: 丁海绍; 施凌; 叶秀成; 黄凯华; 朱剑恩
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baoshan Iron and Steel Co Ltd
Priority date: 2018-02-24
Filing date: 2018-02-24
Publication date: 2021-01-12
Anticipated expiration: 2038-02-24
Also published as: CN110195815A

Abstract

The invention discloses a side pressure thrust device of a vertical rolling mill, wherein a mortar head and a mortar pad are arranged in a thrust block body, the mortar head is fixed at one end of a screw rod through a bolt, a thrust bearing and a rotating bearing are arranged on an outer ring of the mortar head side by side, the thrust bearing is arranged on the outer side of the rotating bearing, an oil inlet is arranged on the thrust block body, an oil return collecting device is welded on a rear end cover, and an oil return opening is arranged on the oil return collecting device. The thrust device can enable lubricating oil in the vertical roller thrust block to smoothly return to the oil tank through the oil return pipe and the oil return collecting device and not flow into the leather tiger.

Description

Vertical rolling mill side pressure thrust unit

Technical Field

The invention relates to a vertical rolling mill, in particular to a lateral pressure thrust device of the vertical rolling mill.

Background

The rolling mill is a device for realizing the metal rolling process, the rolling mill mainly comprises a horizontal rolling mill and a vertical rolling mill, the vertical rolling mill adjusts the opening degree between two rollers through a pressure measuring device so as to realize the control of the width of a hot rolled steel plate, the vertical rollers further improve the rectangle of the steel plate plane and the width precision of the rolled steel plate by utilizing the hydraulic short stroke and the AWC function in the widening and finish rolling processes, and the side pressure is used for avoiding the overlapping of two sides of the steel plate. It can be seen that the quality of the product is directly affected by whether the vertical rolling mill is normal or not.

The vertical roll side pressure (mechanical pressing) is realized by driving a screw rod nut by a worm gear and a worm so as to control the width of a steel plate. The leather tiger is installed outside the screw rod to play a dustproof role, the screw rod nut needs a large amount of lubricating oil when rotating, the return oil of the lubricating oil flows into the leather tiger, and an oil return pipe is connected to the end face of the leather tiger to return the lubricating oil to the oil tank. And the lubrication of the lateral pressure system adopts centralized thin oil lubrication. At present, an oil return pipe of lubricating oil of a screw rod nut is connected to a dustproof leather tiger on a screw rod, the lubricating oil return of the screw rod nut is close to the dustproof leather tiger, when the leather tiger contracts, an oil return port of the oil return pipe is blocked, the flow of the return oil is insufficient, a large amount of oil is accumulated in the leather tiger, and the lubricating oil cannot smoothly return to an oil tank.

Specifically, as shown in fig. 1 to 2, a mortar head 113 with a convex arc surface is connected and installed on the head of the screw rod 11 by a bolt 111, a mortar pad 114 with a concave arc surface is connected and installed on the thrust block body 15 by a bolt, a pressure measuring head 18 for measuring the rolling force of the vertical roll is installed at the front end of the thrust block body 15, a push head 19 is installed on the outer side of the thrust block body 15, the push head 19 is positioned by a front end cover 110, and the front end cover 110 is connected and fixed on the thrust block body 15 by a bolt; the rear end cover 14 is provided with 2 shaft seals 112, the shaft seals 112 are matched with a mortar head 113 to play a sealing role, the rear end cover 14 is connected and arranged on the thrust block body 15 through a connecting bolt 13, the outer circle of the rear end cover 14 is provided with the cutworm 12, and the upper part of the cutworm 12 is hung on the telescopic rod 116; install into oil block 16 on the thrust piece body 15, lubricating oil gets into mortar head 113 in the thrust piece body 15 from this point on, and mortar pad 114 is lubricated, prevents changeing at thrust piece body 15 welded connection and hangs angle 17, prevents changeing and hangs angle 17 and go up installation telescopic link 116.

The working principle is as follows: the lead screw 11 can move along the axial direction when rotating, and the mortar head 113 and the mortar pad 114 form a friction pair to drive the whole thrust block assembly to move axially, so that the vertical roller is pushed to set the roll gap to roll steel plates with different widths.

However, because the thrust block assembly is not positioned in the radial direction, the head of the thrust block sags due to gravity, the shaft seal 112 is damaged quickly, once the shaft seal 112 is damaged, a large amount of lubricating oil enters the leather tiger 12, the leather tiger 12 is damaged quickly under the action of the gravity of the lubricating oil, a large amount of oil leakage is caused, and the lubricating oil is forced to be closed to stop the vertical rolling mill. And the mortar pad 114 is seriously abraded due to no positioning in the radial direction, the oil return pipe is blocked by a large amount of abraded copper scraps, and all lubricating oil enters the bellows and leaks.

In order to overcome the defects, the existing oil return device needs to be improved and perfected, so that the oil return device is improved into good equipment and products.

Disclosure of Invention

The invention aims to provide a side pressure thrust device of a vertical rolling mill, which can lead lubricating oil in a vertical rolling thrust block to smoothly return to an oil tank through an oil return pipe and an oil return collecting device and not flow into a cutworm.

In order to achieve the above object, the present invention adopts the following technical solutions.

The utility model provides a edger mill side pressure thrust unit, includes the lead screw, the skin tiger, the rear end cap, the thrust piece body, the pressure measuring head, pushes away the head, the front end housing that set gradually from the outside to inboard, this internal mortar head and the mortar pad of being equipped with of thrust piece, the mortar head passes through the bolt fastening in lead screw one end, the mortar head outer lane on be equipped with a thrust bearing and swivel bearing side by side, the swivel bearing outside is located to thrust bearing, is equipped with the oil inlet on the thrust piece body, the welding has oil return collection device on the rear end cap, is equipped with the oil return opening on the oil return collection device, this internal oil circuit that is equipped with of thrust piece, the oil inlet passes through the oil circuit respectively to mortar head, mortar pad and.

And a plurality of springs are arranged on the rear end cover, and one ends of the springs prop against the outer ring of the thrust bearing.

The outer ring of the mortar head is also provided with a splicing cap, and the thrust bearing and the rotary bearing are positioned on the mortar head through the splicing cap.

The inner side of the rotary bearing is provided with a copper cutting filter screen.

Thrust piece body below still be equipped with the copper and cut collection device to be linked together with the oil circuit through mortar head and mortar pad, the copper cuts collection device lower extreme opening and seals through the end cap.

The end face of one end of the mortar head is a plane, and the corresponding contact end face of the mortar pad is also a plane.

The outer rings of the thrust bearing and the rotary bearing are provided with corresponding grooves, and positioning pins are arranged in the grooves.

The side pressure thrust device of the vertical rolling mill has the following advantages:

1. and an oil return collecting device and an oil way are added, so that the lubricating oil in the vertical roller thrust block can smoothly return to the oil tank through the oil return pipe and the oil return collecting device and does not flow into the bellows.

2. Two bearings are added in the thrust device, wherein the thrust bearing is arranged close to the outer side.

3. The inner side of the rotary bearing is provided with a copper cutting filter screen which can filter out worn copper cutting and prevent the worn copper cutting from entering the bearing.

4. The mortar head and the mortar pad are changed into a plane form.

5. The bottom of the thrust device is provided with a copper cutting and collecting device, and the copper cutting and collecting device is provided with a plug which can periodically disassemble and discharge copper cutting.

Drawings

FIG. 1 is a schematic cross-sectional view of a thrust device of the prior art;

FIG. 2 is a schematic side view of a thrust device of the prior art;

FIG. 3 is a schematic cross-sectional view of the thrust unit of the present invention;

FIG. 4 is a schematic side view of the thrust unit of the present invention;

fig. 5 is a perspective view of the thrust device of the present invention.

Detailed Description

The technical scheme of the invention is further explained by combining the attached drawings.

The side pressure thrust device of the vertical rolling mill is shown in figures 3-5, and similarly comprises a screw rod 11, a kadsura coccinea 12, a rear end cover 21, a thrust block body 22, a pressure measuring head 18, a push head 19 and a front end cover 110 which are arranged in sequence from the outer side to the inner side as in the prior art, wherein a mortar head 213 and a mortar pad 214 are arranged in the thrust block body 22, the mortar head 213 is fixed at one end of the screw rod 11 through a bolt 111, and an anti-rotation hanging angle 24 is fixedly arranged on the thrust block body 22 through the bolt 111. Different from the prior art, the outer ring of the mortar head 213 is provided with a thrust bearing 210 and a rotating bearing 211 side by side, the thrust bearing 210 is arranged outside the rotating bearing 211, the thrust block body 22 is provided with an oil inlet 23, the rear end cover 21 is welded with an oil return collecting device, the oil return collecting device is provided with an oil return port 25, the thrust block body 22 is internally provided with an oil path 100 which is divided into three paths (see dotted arrows in fig. 3), the oil inlet 23 is respectively communicated with the mortar head 213, the mortar pad 214 and the thrust bearing 211 through the oil path 100, and the oil return port 25 is communicated with the oil path 100 passing through the thrust bearing 211. The hole of the oil path 100 entering the thrust bearing 211 is the smallest, which acts as a throttle, and most of the oil enters the lubrication pieces, i.e., the mortar head 213 and the mortar pad 214, through the two holes on the left side. The oil return port 25 is arranged on the side surface of the rear end cover 21, and the design is that the oil is always stored at the bottom in the whole cavity, namely, the oil-shortage damage of parts can not be caused in the oil-cut period.

In one embodiment, the rear cover 21 is provided with a plurality of springs 26, and one end of each spring 26 abuts against the outer ring of the thrust bearing 210 to eliminate the gap of the thrust bearing 210.

As an embodiment, the outer ring of the mortar head 213 is further screwed with a split cap 27, and the thrust bearing 210 and the rotary bearing 211 are positioned on the mortar head 213 through the split cap 27.

As an embodiment, a copper cutting filter screen 212 is installed inside the rotary bearing 211 to filter out the worn copper cutting from entering the bearing.

According to one embodiment, a copper cutting and collecting device 28 is further arranged below the thrust block body 22, the lower end of the copper cutting and collecting device 28 is opened and sealed through a plug 29, and the wear condition of the mortar pad 214 can be periodically checked through the copper cutting and collecting device.

As an embodiment, one end surface of the mortar head 213 is a plane, and the corresponding contact end surface of the mortar pad 214 is also a plane.

As an embodiment, the outer rings of the thrust bearing 210 and the rotating bearing 211 are provided with corresponding grooves, and the positioning pins 216 are arranged in the grooves, so that the bearing can be prevented from running.

When the air compressor is installed, the thrust block body 22 is assembled, the groove needs to be aligned with the positioning pin 216, the air compressor is slowly pushed into place to be installed, the connecting bolt 13 of the rear end cover 21 is screwed, and finally the bellows 12 and the oil inlet and return hose are installed to connect the oil inlet 23 and the oil return opening 25.

In conclusion, by adopting the side pressure thrust device of the vertical rolling mill, lubricating oil does not enter the leather tiger 12 any more, the leather tiger 12 only plays a dustproof role, oil leakage of the leather tiger 12 is completely eliminated, abrasion of the mortar pad 214 of the copper mortar head 213 is greatly reduced, and the service lives of the mortar head 213 and the mortar pad 214 are prolonged.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims

1. The utility model provides a edger mill side pressure thrust unit, includes lead screw, skin tiger, rear end housing, thrust piece body, pressure measuring head, push head, the front end housing that sets gradually from the outside to inboard, and this internal mortar head and the mortar pad of being equipped with of thrust piece, the mortar head passes through the bolt fastening in lead screw one end, its characterized in that: the mortar head outer ring on be equipped with a thrust bearing and swivel bearing side by side, the thrust bearing is located the swivel bearing outside, is equipped with the oil inlet on the thrust piece body, the welding has the oil return collection device on the rear end cap, is equipped with the oil return mouth on the oil return collection device, the oil return mouth sets up in the side of rear end cap, this internal oil circuit that is equipped with of thrust piece, the oil inlet passes through the oil circuit respectively to mortar head, mortar pad and thrust bearing, the oil return mouth is linked together with the oil circuit through thrust bearing.

2. The edgewise pressure thrust unit of claim 1, wherein: and a plurality of springs are arranged on the rear end cover, and one ends of the springs prop against the outer ring of the thrust bearing.

3. The edgewise pressure thrust unit of claim 1, wherein: the outer ring of the mortar head is also provided with a splicing cap, and the thrust bearing and the rotary bearing are positioned on the mortar head through the splicing cap.

4. The edgewise pressure thrust unit of claim 1, wherein: the inner side of the rotary bearing is provided with a copper cutting filter screen.

5. The edgewise pressure thrust unit of claim 1, wherein: thrust piece body below still be equipped with the copper and cut collection device to be linked together with the oil circuit through mortar head and mortar pad, the copper cuts collection device lower extreme opening and seals through the end cap.

6. The edgewise pressure thrust unit of claim 1, wherein: the end face of one end of the mortar head is a plane, and the corresponding contact end face of the mortar pad is also a plane.

7. The edgewise pressure thrust unit of claim 1, wherein: the outer rings of the thrust bearing and the rotary bearing are provided with corresponding grooves, and positioning pins are arranged in the grooves.