CN102847719A - Down-pressing nut replacement system - Google Patents
Down-pressing nut replacement system Download PDFInfo
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- CN102847719A CN102847719A CN2012102318452A CN201210231845A CN102847719A CN 102847719 A CN102847719 A CN 102847719A CN 2012102318452 A CN2012102318452 A CN 2012102318452A CN 201210231845 A CN201210231845 A CN 201210231845A CN 102847719 A CN102847719 A CN 102847719A
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- nut
- overbearing
- hydraulic cylinder
- bearing platform
- bearing
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Abstract
The invention discloses a down-pressing nut replacement system which comprises an execution device and a control device, wherein the execution device is used for bearing and positioning a down-pressing nut when the down-pressing nut is replaced; and the control device is used for adjusting the up-and-down position of the execution device for bearing the down-pressing nut when the down-pressing nut is replaced. According to the down-pressing nut replacement system, through the cooperation of a guide rod and a guide sleeve, a bearing platform runs steadily; a throttling valve controls the running speed, so that the running speed can be adjusted in real time; the down-pressing nut replacement system is simple in structure and is operated safely and conveniently; reverse operation of the down-pressing nut is reduced; and the replacement time of the down-pressing nut is shortened from 2 to 3 days to 12 hours or so. The labor amount is reduced; and the stability, the safety and the accuracy of the down-pressing nut replacement process are fully guaranteed.
Description
Technical field
The present invention relates to hot rolling line special replacement tool field, specifically a kind of large overbearing nut is changed system.
Background technology
The reversable mill screwdown gear generally is designed to machinery and depresses and hydraulic pressing two parts in hot rolling line, and wherein machinery is depressed and comprised and depress leading screw and screw.Depressing the leading screw material is 42CrMo, adopts modifier treatment, and the large overbearing nut material is Cu base alloy.The in use wearing and tearing of screw will be faster than leading screw, generally need to change large overbearing nut when larger when depressing the screw-nut gap through the use of 3-5.In changing the screw process, traditional replacing method needs to depress the screw-nut overall pulling down, has bad luck to the frame outside and changes.The screw-nut overall weight reaches 8 tons, the installation site is higher, the process of having bad luck is loaded down with trivial details owing to depress, and changes the large overbearing nut of milling train both sides for up to 2-3 days, needs to drop into a large amount of manpowers, relatively wastes time and energy.
Summary of the invention
One of purpose of the present invention is that to solve in the existing large overbearing nut process replacing time long, Renewal process is complicated, the problem that labor intensive is many provides a kind of time can guarantee large overbearing nut Renewal process safety, quick, reliable large overbearing nut short, that Renewal process is simple, labor intensive is few of changing to change system.
A kind of large overbearing nut replacing provided by the invention system comprises: actuating unit and control device;
Described actuating unit is used for carrying large overbearing nut when large overbearing nut is changed;
Described control device is used for adjusting the position of described actuating unit carrying large overbearing nut when large overbearing nut is changed.
Further, described actuating unit comprises:
Bearing platform, hydraulic cylinder and transmission mechanism;
Described bearing platform is used for the carrying large overbearing nut, and large overbearing nut is positioned;
Described hydraulic cylinder is used for receiving the described bearing platform lifting of driving force rear support;
Described hydraulic cylinder bar top is to be the multidiameter shape, is used for installing swivel head and carrying bearing platform;
Described transmission mechanism is used for driving the bearing platform rotation after receiving driving force, is convenient to change be fixed on large overbearing nut on the described bearing platform.
Further, described bearing platform is provided with locating slot and dowel, is used for changing fixedly large overbearing nut of large overbearing nut process.
Further, described transmission mechanism comprises:
Swivel head, travelling gear and handle;
Described swivel head is used for after receiving driving force, drives described bearing platform rotation, thereby drives the large overbearing nut rotation that is fixed on the described bearing platform;
Described travelling gear is used for the driving force of handle transmission is passed to described swivel head.
Further, described swivel head comprises:
Bearing inner sleeve, bearing and bearing outside;
Described bearing inner sleeve is connected with described hydraulic cylinder masthead section;
It is peripheral that described bearing holder (housing, cover) is connected on described bearing inner sleeve;
It is peripheral that described bearing outside is socketed in described bearing, is fixedly connected with described bearing platform.
Further, described actuating unit also comprises:
Guide post and fairlead;
One end of described guide post is connected with described travelling gear and hydraulic cylinder bar respectively by a crossbeam that is parallel to described bearing platform, and the other end and fairlead pivot bush unit are together.
Further, described control device comprises:
The control valve platform;
Described control valve platform is connected with described hydraulic cylinder, is provided with reversal valve and choke valve;
Described reversal valve is used for control hydraulic cylinder lifting direction, and described choke valve is used for the rising or falling speed of control hydraulic cylinder.
Further, described large overbearing nut is changed system, also comprises:
Base, protective sleeve, hydraulic pump and Pressure gauge;
Described base is used for carrying described hydraulic cylinder and fairlead;
Described protective sleeve is fixed on the base, is used for protecting large overbearing nut in replacing large overbearing nut process;
Described hydraulic pump is used for providing the power source to the hydraulic cylinder lifting;
Described Pressure gauge is arranged between described hydraulic pump and the control valve platform, is used for checking the pressure of pipeline.
Further, described protective sleeve is provided with peep hole.
A kind of large overbearing nut provided by the invention is changed system by cooperating between guide rod and guide post, the bearing platform run time behaviour is steady, speed by the throttle valve control operation, the operation speed is adjustable in real time, simple in structure, handling safety, convenience, reduce having bad luck of screw-nut, large overbearing nut is changed the time foreshortened to about 12 hours by 2-3 days, reduced the people power that drops into, and fully guaranteed stability, security and accuracy in large overbearing nut 5 Renewal process.
Description of drawings
Fig. 1 is the front view that large overbearing nut is changed system in the embodiment of the invention;
Fig. 2 is the top view that large overbearing nut is changed system among the embodiment that provides of Fig. 1.
The specific embodiment
As shown in Figure 1 and Figure 2, a kind of large overbearing nut replacing provided by the invention system comprises actuating unit, control device, base 1, hydraulic pump 2, protective sleeve 3 and Pressure gauge 4.
Wherein, actuating unit is used for carrying large overbearing nut 5 when large overbearing nut 5 is changed, and it comprises bearing platform 6, hydraulic cylinder 7, transmission mechanism, guide post 8 and fairlead 9.Bearing platform 6 is used for carrying large overbearing nut 5.Equally distributed 4 locating slots 10 on bearing platform 6 circumferencial directions, alignment pin 11 is installed in the locating slot 10, and alignment pin 11 adopts interference fits to install with locating slot 10, and the present invention adopts 50H7/k6, according to the size of different screws, alignment pin 11 is designed to different diameters.Alignment pin 11 and locating slot 10 are used at the fixing large overbearing nut 5 of large overbearing nut 5 Renewal process.Hydraulic cylinder 7 is used for receiving 6 liftings of driving force rear support bearing platform, and hydraulic cylinder 7 cylinder bar tops are the multidiameter shape, are used for installing swivel head 12 and carrying bearing platform 6.Transmission mechanism is used for driving bearing platform 6 rotations after receiving driving force, be convenient to change the large overbearing nut 5 that is fixed on the bearing platform 6.Transmission mechanism comprises: swivel head 12, travelling gear 13 and handle 14.Swivel head 12 is comprised of bearing inner sleeve, bearing and bearing outside.Bearing inner sleeve is connected with hydraulic cylinder 7 cylinder masthead sections, and bearing holder (housing, cover) is connected on the bearing inner sleeve periphery.Bearing outside is socketed in the bearing periphery, adopts bolt to be fixedly connected with bearing platform 6.Swivel head 12 is used for after receiving driving force, drives described bearing platform 6 rotations, thereby drives large overbearing nut 5 rotations that are fixed on the described bearing platform 6; Travelling gear 13 is divided into secondary, and the first order is orthogonal two helical gears of axis, gearratio i=2:5, and the second level is Spur Gear Driving, gearratio i=1:4, whole gear-driven gearratio is 1:10.Described travelling gear 13 is used for the driving force that handle 14 transmits is passed to described swivel head 12.Guide post 8 and fairlead 9 are used for impelling bearing platform 6 in the lifting process even running, one end of guide post 8 is connected with travelling gear 13 and hydraulic cylinder 7 cylinder bars respectively by a crossbeam that is parallel to bearing platform 6, the other end of guide post 8 and fairlead 9 pivot bush units together, guide post 8 adopts matched in clearance with fairlead 9.
Control device is used for adjusting the position of actuating unit carrying large overbearing nut 5 when large overbearing nut 5 is changed.Control device comprises control valve platform 14; Control valve platform 14 is connected with hydraulic cylinder 7, and the above is provided with the reversal valve of a 3-position 4-way and connects a choke valve, and reversal valve is used for control hydraulic cylinder 7 lifting directions, and choke valve is used for the rising or falling speed of control hydraulic cylinder 7.
The process of using Fig. 1, large overbearing nut 5 replacing systems shown in Figure 2 that large overbearing nut 5 is changed is as follows: AGC hydraulic cylinder or other auxiliary device that at first will depress the leading screw below are removed, and will depress leading screw and rise to the limes superiors position.Remove the positioning key that large overbearing nut 5 is connected with mill housing, will depress leading screw drive large overbearing nut 5 and put down in the lump, get final product until large overbearing nut 5 all exposes the installation site.Large overbearing nut replacing provided by the invention system is placed on above the bottom working roll (or supporting roller support), pushes together frame.According to the actual size of large overbearing nut 5, adjust alignment pin 11 distances on the bearing platform 6.Adjust hydraulic pump 2 outlet pressures, the support force that makes progress of hydraulic cylinder 7 is equated with large overbearing nut 5 gravity.Lifting hydraulic cylinder 7 rises bearing platform 6 and contacts with large overbearing nut 5, guarantees that alignment pin 11 penetrates the locating hole of large overbearing nut 5.Shake handle 14 and make bearing platform 6 drive large overbearing nut 5 rotations, until whole large overbearing nut 5 screws off, large overbearing nut 5 and leading screw are broken away from.Use bottom working roll (or backing roll) more changing device drive screw more the large overbearing nut 5 of changing device and dismounting pull out frame, old large overbearing nut 5 is hung out.With lifting hydraulic cylinder 7 pressure releases, 5 liftings of new large overbearing nut to the bearing platform 6 of changing system, are pushed frame with it.Adjust hydraulic pump 2 outlet pressures and promote lifting hydraulic cylinder 7, large overbearing nut 5 is contacted with leading screw.Shake handle 14 and make bearing platform 6 drive large overbearing nut 5 rotations, until whole large overbearing nut 5 screws on leading screw.Sling and depress screw-nut, large overbearing nut 5 positioning keys are installed, return other auxiliary device of dress.
The large overbearing nut that the application of the invention provides is changed system, reduces having bad luck of screw-nut, and the 5 replacing times of large overbearing nut were foreshortened to about 12 hours by 2-3 days.Reduce the people power that drops into, and fully guaranteed stability, security and accuracy in large overbearing nut 5 Renewal process.
Above-described embodiment is the better embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (9)
1. a large overbearing nut is changed system, it is characterized in that, comprising:
Actuating unit and control device;
Described actuating unit is used for carrying large overbearing nut when large overbearing nut is changed;
Described control device is used for adjusting the position of described actuating unit carrying large overbearing nut when large overbearing nut is changed.
2. large overbearing nut as claimed in claim 1 is changed system, it is characterized in that described actuating unit comprises:
Bearing platform, hydraulic cylinder and transmission mechanism;
Described bearing platform is used for the carrying large overbearing nut, and large overbearing nut is positioned;
Described hydraulic cylinder is used for receiving the described bearing platform lifting of driving force rear support;
Described hydraulic cylinder bar top is to be the multidiameter shape, is used for installing swivel head and carrying bearing platform;
Described transmission mechanism is used for driving the bearing platform rotation after receiving driving force, is convenient to change be fixed on large overbearing nut on the described bearing platform.
3. large overbearing nut as claimed in claim 2 is changed system, it is characterized in that:
Described bearing platform is provided with locating slot and dowel, is used for changing fixedly large overbearing nut of large overbearing nut process.
4. large overbearing nut as claimed in claim 3 is changed system, it is characterized in that described transmission mechanism comprises:
Swivel head, travelling gear and handle;
Described swivel head is used for after receiving driving force, drives described bearing platform rotation, thereby drives the large overbearing nut rotation that is fixed on the described bearing platform;
Described travelling gear is used for the driving force of handle transmission is passed to described swivel head.
5. large overbearing nut as claimed in claim 4 is changed system, it is characterized in that described swivel head comprises:
Bearing inner sleeve, bearing and bearing outside;
Described bearing inner sleeve is connected with described hydraulic cylinder masthead section;
It is peripheral that described bearing holder (housing, cover) is connected on described bearing inner sleeve;
It is peripheral that described bearing outside is socketed in described bearing, is fixedly connected with described bearing platform.
6. large overbearing nut as claimed in claim 5 is changed system, it is characterized in that described actuating unit also comprises:
Guide post and fairlead;
One end of described guide post is connected with described travelling gear and hydraulic cylinder bar respectively by a crossbeam that is parallel to described bearing platform, and the other end and fairlead pivot bush unit are together.
7. large overbearing nut as claimed in claim 6 is changed system, it is characterized in that described control device comprises:
The control valve platform;
Described control valve platform is connected with described hydraulic cylinder, is provided with reversal valve and choke valve;
Described reversal valve is used for control hydraulic cylinder lifting direction, and described choke valve is used for the rising or falling speed of control hydraulic cylinder.
8. large overbearing nut as claimed in claim 7 is changed system, it is characterized in that, also comprises:
Base, protective sleeve, hydraulic pump and Pressure gauge;
Described base is used for carrying described hydraulic cylinder and fairlead;
Described protective sleeve is fixed on the base, is used for protecting large overbearing nut in replacing large overbearing nut process;
Described hydraulic pump is used for providing the power source to the hydraulic cylinder lifting;
Described Pressure gauge is arranged between described hydraulic pump and the control valve platform, is used for checking the pressure of pipeline.
9. large overbearing nut as claimed in claim 8 is changed system, it is characterized in that:
Described protective sleeve is provided with peep hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210231845.2A CN102847719B (en) | 2012-07-05 | 2012-07-05 | Down-pressing nut replacement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210231845.2A CN102847719B (en) | 2012-07-05 | 2012-07-05 | Down-pressing nut replacement system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102847719A true CN102847719A (en) | 2013-01-02 |
| CN102847719B CN102847719B (en) | 2015-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210231845.2A Active CN102847719B (en) | 2012-07-05 | 2012-07-05 | Down-pressing nut replacement system |
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| Country | Link |
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| CN (1) | CN102847719B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0787700A (en) * | 1993-09-17 | 1995-03-31 | Toshiba Corp | Nut screw device of vertical rotary electric machine |
| JPH07237055A (en) * | 1994-02-23 | 1995-09-12 | Mitsubishi Heavy Ind Ltd | Nut fitting/removing device |
| JPH09295230A (en) * | 1996-04-26 | 1997-11-18 | Tokyo Denki Komusho:Kk | Attaching/detaching device of large nut |
| KR20040020688A (en) * | 2002-08-31 | 2004-03-09 | 홍정희 | Device for separating net from nut assembly for roll choke |
| CN201436134U (en) * | 2009-04-24 | 2010-04-07 | 中冶成工上海五冶建设有限公司 | Four-roller mill helix pressing nut changer |
| CN102009341A (en) * | 2010-09-13 | 2011-04-13 | 陈波 | Vertical screw-closure device for large-scale propeller shaft and nut |
-
2012
- 2012-07-05 CN CN201210231845.2A patent/CN102847719B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0787700A (en) * | 1993-09-17 | 1995-03-31 | Toshiba Corp | Nut screw device of vertical rotary electric machine |
| JPH07237055A (en) * | 1994-02-23 | 1995-09-12 | Mitsubishi Heavy Ind Ltd | Nut fitting/removing device |
| JPH09295230A (en) * | 1996-04-26 | 1997-11-18 | Tokyo Denki Komusho:Kk | Attaching/detaching device of large nut |
| KR20040020688A (en) * | 2002-08-31 | 2004-03-09 | 홍정희 | Device for separating net from nut assembly for roll choke |
| CN201436134U (en) * | 2009-04-24 | 2010-04-07 | 中冶成工上海五冶建设有限公司 | Four-roller mill helix pressing nut changer |
| CN102009341A (en) * | 2010-09-13 | 2011-04-13 | 陈波 | Vertical screw-closure device for large-scale propeller shaft and nut |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102847719B (en) | 2015-01-28 |
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| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: CAPITAL IRON + STEEL GENERAL CO. Effective date: 20140404 Owner name: BEIJING SHOUGANG CO., LTD. Free format text: FORMER OWNER: HEBEI SHOUGANG QIAN AN STEEL CO., LTD. Effective date: 20140404 |
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Free format text: CORRECT: ADDRESS; FROM: 064404 TANGSHAN, HEBEI PROVINCE TO: 100041 SHIJINGSHAN, BEIJING |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20140404 Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Applicant after: Beijing Shougang Co., Ltd. Address before: Yangzidian Town, Tangshan City City, Qian'an province Hebei 064404 Applicant before: Hebei Shougang Qian'an Steel Co., Ltd. Applicant before: Capital Iron & Steel General Company |
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