CN216540211U - Split type hot roll gap adjusting screw rod - Google Patents
Split type hot roll gap adjusting screw rod Download PDFInfo
- Publication number
- CN216540211U CN216540211U CN202122609570.9U CN202122609570U CN216540211U CN 216540211 U CN216540211 U CN 216540211U CN 202122609570 U CN202122609570 U CN 202122609570U CN 216540211 U CN216540211 U CN 216540211U
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- side pressure
- transition block
- lead screw
- hot roll
- roll gap
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Abstract
The utility model relates to a split hot roll gap adjusting screw rod which comprises a side pressure screw rod and a transition block, wherein one side of the transition block is in interference fit with the side pressure screw rod, and the other side of the transition block is fixedly connected with a spherical pad. The advantages are that: simple structure is reasonable, adopts transition block structure, avoids the whole dismantlements of side pressure lead screw to change, utilizes interference fit to realize the fixed of narrow and small space and side pressure lead screw. The side pressure lead screw with a split structure is adopted, so that the transmission precision of the side pressure lead screw is ensured to be recovered on line under the condition that the side pressure lead screw is not replaced, and the positioning requirement of a side pressure device of a vertical rolling mill is met.
Description
Technical Field
The utility model belongs to the field of rough rolling mills of hot roll lines, and particularly relates to a split type hot roll gap adjusting screw rod.
Background
The vertical roller mill is arranged in front of the hot continuous rolling roughing mill, and the roll gap is set through a side pressure adjusting device arranged at the lower part of the housing according to the width of a finished product, so that the width of the strip steel is controlled. The roll gap adjusting device drives a side pressure lead screw and a side pressure nut to drive through a transmission shaft and a worm gear speed reducer, the side pressure lead screw and a side pressure box are dynamically connected through a spherical pad, gaps of all parts are eliminated through a balance cylinder, and a gland is arranged outside the spherical pad. The rolling mill runs under severe environments such as alternating impact load, high temperature, steam, iron oxide sheet dust and the like for a long time, so that the contact rate of a spherical pad and a concave pad of a side pressure box is reduced due to uneven clamping or abrasion of a slide way, the spherical pad is very easy to damage, if the spherical pad is continuously used, the head of the side pressure screw rod is abraded, a key groove on the end surface is ground flat, the side pressure box is abraded and scrapped, and even steel clamping and rolling stopping accidents occur. Once the above accident occurs, the whole screw nut device must be disassembled and replaced, the original side pressure screw mounting structure is shown in fig. 1, and the original side pressure screw replacing method comprises the following steps:
1. and disassembling the vertical roll, the vertical roll frame, the AWC frame, the rear side protective cover of the side pressure screw rod and fixing bolts of each part.
2. Because the space position is limited, the side pressure lead screw is arranged in the rolling mill, and the side pressure lead screw fixed in the rolling mill can be pulled out of the rolling mill obliquely only by using a crane and a chain block;
3. the new side wire pressing bar still depends on manpower to obliquely drag the chain block and the crane is obliquely pulled to the inside of the rolling mill; the AWC frame, the vertical roll frame and the vertical roll are sequentially installed back.
The side pressure lead screw replacement at least needs to stop rolling for 72h, the yield is seriously influenced, the daily spot inspection and maintenance workload is increased, and personal injury accidents are very easily caused due to narrow operation space during replacement.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide the split type hot rolling roll gap adjusting lead screw, reduce the workload of replacing the side pressure lead screw and ensure the operation stability of the side pressure device.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
the utility model provides a split type hot roll seam adjusting screw, includes side pressure lead screw, transition piece one side and side pressure lead screw interference fit, opposite side and spherical pad fixed connection.
One side of the transition block is provided with a groove, and the other side of the transition block is provided with a mounting hole.
The transition block is of a cylindrical structure.
The transition block is fixedly connected with the spherical pad through a bolt.
The middle of the transition block is connected with the side pressure screw rod through a bolt.
Compared with the prior art, the utility model has the beneficial effects that:
the split type hot rolling roll gap adjusting screw is simple and reasonable in structure, a transition block structure is adopted, the side pressure screws are prevented from being completely disassembled and replaced, and the narrow space and the side pressure screws are fixed by interference fit. The side pressure lead screw with a split structure is adopted, so that the transmission precision of the side pressure lead screw is ensured to be restored on line under the condition that the side pressure lead screw is not replaced, and the positioning requirement of a side pressure device of the vertical rolling mill is met. The coaxiality and the spherical contact rate of the transmission device are ensured, the positioning accuracy of the side pressing device is further ensured, the operation stability of the side pressing device of the vertical rolling mill is ensured, the technical surface quality of a steel plate is ensured, the replacement efficiency of a side pressing lead screw is improved, the fault time is effectively reduced, and the yield is improved. The askew drawing of crane is pulled to one side has been avoided in the aspect of the safety, promotes maintainer's factor of safety.
Drawings
FIG. 1 is a schematic view of the installation of a primary pressure screw.
Fig. 2 is a schematic structural diagram of the present invention.
In the figure: 1-protective cover 2-memorial archway 3-side pressure box 4-gland 5-side pressure nut 6-side pressure lead screw 7-spherical pad 8-transition block.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the following embodiments.
See figure 2, split type hot roll gap adjusting screw, including side pressure lead screw 6, transition piece 8, 8 one side of transition piece and pressure measuring lead screw interference fit, opposite side and spherical pad 7 fixed connection. One side of the transition block 8 is provided with a groove for connecting with the side pressure screw rod 6, and the other side is provided with a mounting hole which is fixedly connected with the spherical pad 7 through a bolt.
Wherein the transition block 8 may be of cylindrical configuration. The middle of the end part of the lateral pressure screw rod 6 is provided with a threaded hole, and the middle of the transition block 8 is connected with the lateral pressure screw rod 6 through a bolt so as to increase the firmness of the matching of the lateral pressure screw rod and the transition block. Namely, the transition block 8 is fixedly connected with the side pressure screw 6 by bolts after being arranged in an interference fit manner.
When the device is installed, the transition block 8(218H7/s6) is installed on the head of the side pressure screw 6 after being heated, the middle of the head of the side pressure screw 6 is fixed with the transition block 8 by using an M24 hexagon socket head cap screw, and finally the transition block 8 is fixedly connected with the spherical pad 7 by using a bolt.
When the spherical pad 7 is damaged, the transition block 8 is in direct contact with the side pressure box 3 at this time, and only the transition block 8 is damaged. The mode of replacing the transition block 8 is adopted to realize simple and quick precision recovery, the mode of replacing a lead screw in a complicated time is avoided, the labor amount is reduced, and meanwhile, the maintenance cost of spare parts is reduced.
Claims (5)
1. The utility model provides a split type hot roll seam adjusting screw which characterized in that, includes side pressure lead screw, transition piece one side and side pressure lead screw interference fit, the opposite side and sphere pad fixed connection.
2. The split hot roll gap adjusting screw of claim 1, wherein the transition block has a groove on one side and a mounting hole on the other side.
3. The split hot roll gap adjusting screw of claim 1, wherein the transition block is of a cylindrical configuration.
4. The split hot roll gap adjusting screw of claim 1, wherein the transition block is fixedly connected with the spherical pad through a bolt.
5. The split hot roll gap adjusting screw of claim 1, wherein the middle of the transition block is connected with the side pressure screw through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122609570.9U CN216540211U (en) | 2021-10-28 | 2021-10-28 | Split type hot roll gap adjusting screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122609570.9U CN216540211U (en) | 2021-10-28 | 2021-10-28 | Split type hot roll gap adjusting screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216540211U true CN216540211U (en) | 2022-05-17 |
Family
ID=81567945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122609570.9U Active CN216540211U (en) | 2021-10-28 | 2021-10-28 | Split type hot roll gap adjusting screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216540211U (en) |
-
2021
- 2021-10-28 CN CN202122609570.9U patent/CN216540211U/en active Active
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| GR01 | Patent grant |