CN104148140A - Screw replacement device and method for rapidly replacing roller surface stud screws of high-pressure roller mill - Google Patents
Screw replacement device and method for rapidly replacing roller surface stud screws of high-pressure roller mill Download PDFInfo
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- CN104148140A CN104148140A CN201410348745.7A CN201410348745A CN104148140A CN 104148140 A CN104148140 A CN 104148140A CN 201410348745 A CN201410348745 A CN 201410348745A CN 104148140 A CN104148140 A CN 104148140A
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- Prior art keywords
- stud
- screw
- nut
- screw mandrel
- pressure roller
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Abstract
The invention discloses a screw replacement device and method for rapidly replacing roller surface stud screws of a high-pressure roller mill, and relates to the technical field of roller surface wear-resistance restoration of a high-pressure roller mill. The screw replacement device comprises a screw rod (1), a nut (2), a flat washer (3) and a steel pipe (4), wherein one end of the screw rod is provided with a thread (11), and the other end of the screw rod (1) is provided with a polished rod (10); the lower end of the polished rod is provided with a necking section (9); the thread of the screw rod is provided with the nut; the flat washer is arranged under the nut; the steel pipe externally sleeves the part, between the thread end of the screw rod and the necking section, of the polished rod; the necking section at the lower end of the screw rod is welded on a broken stud screw (5), and then the broken stud screw (5) is pulled out from a roller sleeve (7) by rotating the nut at the upper end of the screw rod. The screw replacement device and method save the screw nut replacement time, and the device is long in service life; meanwhile, the service life of the roller sleeve is also prolonged, the device maintaining expense is lowered effectively, the device maintaining time is shortened, and the service life of the whole roller mill is prolonged effectively.
Description
[technical field]
The present invention relates to Roller of High wear-resisting repair technology field, especially relate to changing spike devices and changing nail method of a kind of high-pressure roller mill quick-replaceable roll surface stud.
[background technology]
Known, the operation principle of high-pressure roller mill be compression roller by two opposite direction rotatings under hydraulic system effect, produce huge extruding force by crushing material; Because high-pressure roller mill adopts stud roll surface, in the time of work, press roll surface forms one deck backing strap, play the effect of protecting roll surface to slow down the rate of wear, and the compression roller roll surface Life Relation of high-pressure roller mill is to operation rate and maintenance cost; The compression roller of high-pressure roller mill as shown in Figure 1, formed by parts such as roll shaft, roller shell, bearing, bearing blocks, wherein stud roll surface is in use owing to entering iron or other hard thing, will cause the fracture of compression roller roll surface stud, if fracture stud continues to use without changing, will cause local backing strap to come off, the phenomenons such as roller shell wearing and tearing aggravation, when roller shell may wear to a certain degree, even whole roller shell to be scrapped, increase the duration and cost of maintenance of equipment; Due to stud roll surface in use for some time, through extruding, relatively soft roller shell there will be certain distortion, and it is limited that broken nail exposes roller shell part, even some stud is at roller shell internal break, therefore change broken nail very difficult, even if adopt the method for heating that bonding agent was lost efficacy, but stud is still difficult to be pulled out.
[summary of the invention]
In order to overcome the deficiency in background technology; the invention discloses changing spike devices and changing nail method of a kind of high-pressure roller mill quick-replaceable roll surface stud; realize feature simple to operate, that can reuse, save stud replacing time, long service life; and reduce maintenance of equipment expense; reduce the maintenance of equipment time; simultaneously can also effectively protect roller shell, slow down its rate of wear, limited extension device service life.
In order to realize described goal of the invention, the present invention adopts following technical scheme:
A kind of high-pressure roller mill quick-replaceable roll surface stud change spike devices, the described spike devices of changing comprises screw mandrel, nut, plain washer and steel pipe, one end at screw mandrel is provided with screw thread, the other end of screw mandrel is polished rod, lower end at polished rod is provided with necking segment, on the screw thread of screw mandrel, be provided with nut, be provided with plain washer in the bottom of nut, described steel pipe socket is connected on the outside of polished rod between the end of thread of screw mandrel and necking segment.
Described high-pressure roller mill quick-replaceable roll surface stud change spike devices, the diameter of described necking segment is less than the diameter of stud.
Described high-pressure roller mill quick-replaceable roll surface stud change spike devices, the screw thread nominal diameter of the end of thread of described screw mandrel is greater than the diameter of stud.
The nail method of changing of described high-pressure roller mill quick-replaceable roll surface stud, comprises welding gun, welding wire and welding agent, and changes spike devices, and concrete operation step is as follows:
(1) decontamination
After the rupture aperture of stud and impurity are around cleaned out, the stud of fracture is heated, make the bonding agent of stud outside lose viscosity;
(2) welding
Connect previous step, welding gun is aimed to the position heating 1-2 minute that stud need to be welded, full weld medicine will be dipped on welding wire, welding wire is welded full one week along the bottom of the screw mandrel bottom necking segment of changing spike devices, described screw mandrel is welding as one with the end face of fracture stud, then screws the nut that changes spike devices leading screw top, makes nut drive leading screw to screw out from steel pipe, make stud bear axial tension stably, fracture stud is extracted;
(3) new stud is installed
Connect previous step, use cleaner special to clean stud hole, put into stud hole after then new stud being stained with to bonding agent, after new stud is installed, need to wait for 24 hours and after glue solidifies completely, complete the replacing of stud.
Owing to having adopted technique scheme, the present invention has following beneficial effect:
The changing spike devices and change nail method of described high-pressure roller mill quick-replaceable roll surface stud, be applicable to the stud roll surface high-pressure roller mill of the industrial circle brittle mineral grinding operations such as metallurgy, mine, coal, chemical industry, by the necking segment of screw mandrel 1 lower end being welded in the stud 5 of fracture, by the nut 2 of rotary screw 1 upper end, the stud of fracture 5 is extracted from roller shell 7; That the present invention has is simple to operate, rapidly and efficiently, can reuse, and save stud and change time, the feature of long service life, also extended roller shell service life simultaneously, effectively fall low maintenance of equipment expense, reduced the maintenance of equipment time, effectively improved machine life.
[brief description of the drawings]
Fig. 1 is compression roller structural representation;
Fig. 2 is structural representation of the present invention;
Fig. 3 is use state diagram of the present invention;
In figure: 1, screw mandrel; 2, nut; 3, plain washer; 4, steel pipe; 5, stud; 6, bonding agent; 7, roller shell; 8, weld; 9, necking segment; 10, polished rod; 11, screw thread.
[detailed description of the invention]
Explanation the present invention that can be detailed by the following examples, discloses object of the present invention and is intended to protect all technological improvements in the scope of the invention.
By reference to the accompanying drawings the high-pressure roller mill quick-replaceable roll surface stud described in 1 change spike devices, the described spike devices of changing comprises screw mandrel 1, nut 2, plain washer 3 and steel pipe 4, be provided with screw thread 11 in one end of screw mandrel 1, the other end of screw mandrel 1 is polished rod 10, be provided with necking segment 9 in the lower end of polished rod 10, the diameter of described necking segment 9 is less than the diameter of stud 5; On the screw thread 11 of screw mandrel 1, be provided with nut 2, be provided with plain washer 3 in the bottom of nut 2, described steel pipe 4 is socketed in the outside of polished rod 10 between screw thread 11 ends of screw mandrel 1 and necking segment 9; The screw thread nominal diameter of screw thread 11 ends of described screw mandrel 1 is greater than the diameter of stud 5.
The nail method of changing of described high-pressure roller mill quick-replaceable roll surface stud, comprises welding gun, welding wire and welding agent, and concrete operation step is as follows:
(1) decontamination
After the rupture aperture of stud 5 and impurity are around cleaned out, the stud 5 of fracture is heated, make the bonding agent 6 of stud 5 outsides lose viscosity;
(2) welding
Connect previous step, welding gun is aimed to the position heating 1-2 minute that stud 5 needs welding, full weld medicine will be dipped on welding wire, welding wire is welded full one week along the bottom of the screw mandrel 1 bottom necking segment of changing spike devices, described screw mandrel 1 is welding as one with the end face of fracture stud 5, then screws the nut 2 that changes spike devices leading screw 1 top, makes nut 2 drive leading screw 1 to screw out, make stud 5 bear axial tension stably, fracture stud 5 is extracted;
(3) new stud 5 is installed
Connect previous step, use cleaner special to clean stud hole, then new stud 5 is stained with to bonding and is put into stud hole after special glue, after new stud 5 is installed, need to wait for 24 hours and after glue solidifies completely, complete the replacing of stud 5.
Implement changing spike devices and changing nail method of high-pressure roller mill quick-replaceable roll surface stud of the present invention, in use, after the rupture aperture of stud 5 and impurity are around cleaned out, stud 5 to fracture heats, make the bonding agent 6 of stud 5 outsides lose viscosity, welding gun is aimed to the position heating 1-2 minute that stud 5 needs welding, full weld medicine will be dipped on welding wire, welding wire is welded full one week along the bottom of the screw mandrel 1 bottom necking segment of changing spike devices, described screw mandrel 1 is welding as one with the end face of fracture stud 5, then screw the nut 2 that changes spike devices leading screw 1 top, make nut 2 drive leading screw 1 to screw out, make stud 5 bear axial tension stably, after fracture stud 5 is extracted, use cleaner special to clean stud hole, then after new stud 5 being stained with to bonding special glue, put into stud hole, after new stud 5 is installed, need to wait for 24 hours and after glue solidifies completely, complete the replacing of stud 5, the object that plain washer 3 is set on screw mandrel 1 is the power uniform and stable more that ensures drawing stud in rotating nut 2, and while being conducive to rotating nut, spanner applies moment, in the object that steel pipe 4 is set in the bottom of screw mandrel 1 is rotating nut, utilize the whole spike devices of changing of steel pipe support, make it have good stress surface, and ensure that screw mandrel 1 is perpendicular to roll surface, make stud 5 be subject to radially drawing, in the bottom of screw mandrel 1, necking segment 9 is set, and the diameter that the diameter of necking segment 8 is less than stud 5 is in order to facilitate follow-up welding job, the diameter that the diameter of screw thread 11 ends of screw mandrel 1 is greater than stud 5 is in order to prevent that stud 5 is interfered with steel pipe 4 in the time getting stud 5, that the present invention has is simple to operate, rapidly and efficiently, can reuse, and save the 5 replacing times of stud, the feature of long service life, also extended roller shell service life simultaneously, effectively fall low maintenance of equipment expense, reduced the maintenance of equipment time, effectively improved machine life.
Part not in the detailed description of the invention is prior art.
The embodiment selecting in this article for open goal of the invention of the present invention, currently thinks suitablely, still, will be appreciated that, the present invention is intended to comprise that all belong to all changes and the improvement of the embodiment in this design and invention scope.
Claims (4)
- A high-pressure roller mill quick-replaceable roll surface stud change spike devices, it is characterized in that: described in change spike devices and comprise screw mandrel (1), nut (2), plain washer (3) and steel pipe (4), be provided with screw thread (11) in one end of screw mandrel (1), the other end of screw mandrel (1) is polished rod (10), be provided with necking segment (9) in the lower end of polished rod (10), on the screw thread (11) of screw mandrel (1), be provided with nut (2), be provided with plain washer (3) in the bottom of nut (2), the outside of polished rod (10) between screw thread (11) end that described steel pipe (4) is socketed in screw mandrel (1) and necking segment (9).
- High-pressure roller mill quick-replaceable roll surface stud according to claim 1 change spike devices, it is characterized in that: the diameter of described necking segment (9) is less than the diameter of stud (5).
- High-pressure roller mill quick-replaceable roll surface stud according to claim 1 change spike devices, it is characterized in that: the screw thread nominal diameter of screw thread (11) end of described screw mandrel (1) is greater than the diameter of stud (5).
- 4. the nail method of changing of high-pressure roller mill quick-replaceable roll surface stud, comprises welding gun, welding wire and welding agent, and changes spike devices, it is characterized in that: concrete operation step is as follows:(1) decontaminationAfter the aperture of the stud that ruptures (5) and impurity are around cleaned out, the stud (5) of fracture is heated, make the outside bonding agent (6) of stud (5) lose viscosity;(2) weldingConnect previous step, welding gun is aimed to the position heating 1-2 minute that stud (5) needs welding, full weld medicine will be dipped on welding wire, welding wire is welded full one week along the bottom of screw mandrel (1) the bottom necking segment of changing spike devices, described screw mandrel (1) is welding as one with the end face of fracture stud (5), then screw the nut (2) that changes spike devices leading screw (1) top, make nut (2) drive leading screw (1) to screw out from steel pipe (4), make stud (5) bear axial tension stably, the stud that will rupture (5) is extracted;(3) new stud (5) is installedConnect previous step, use cleaner special to clean stud hole, put into stud hole after then new stud (5) being stained with to bonding agent (6), after new stud (5) is installed, need to wait for 24 hours and after glue solidifies completely, complete the replacing of stud (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410348745.7A CN104148140B (en) | 2014-07-22 | 2014-07-22 | The changing spike devices and change nail method of a kind of high-pressure roller mill quick-replaceable roll surface stud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410348745.7A CN104148140B (en) | 2014-07-22 | 2014-07-22 | The changing spike devices and change nail method of a kind of high-pressure roller mill quick-replaceable roll surface stud |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104148140A true CN104148140A (en) | 2014-11-19 |
| CN104148140B CN104148140B (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410348745.7A Active CN104148140B (en) | 2014-07-22 | 2014-07-22 | The changing spike devices and change nail method of a kind of high-pressure roller mill quick-replaceable roll surface stud |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114559403A (en) * | 2022-02-25 | 2022-05-31 | 中信重工机械股份有限公司 | Nail puller for quickly replacing roller surface stud of stud roller and nail replacing method |
| WO2023199164A1 (en) * | 2022-04-14 | 2023-10-19 | Weir Minerals Netherlands B.V. | Stud installation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19505210A1 (en) * | 1995-02-16 | 1996-08-22 | Alfred Siemer | Changing systems for treating worn or defective nip or processor rollers |
| WO1996029149A1 (en) * | 1995-03-22 | 1996-09-26 | Mmd Design & Consultancy Limited | Mineral breaker |
| CN101823011A (en) * | 2010-03-23 | 2010-09-08 | 中信重工机械股份有限公司 | Stud type roll surface structure for rolling mill and method for replacing stud |
| CN202006446U (en) * | 2011-03-15 | 2011-10-12 | 益阳橡胶塑料机械集团有限公司 | Device for detaching oilless bearing |
| GB2492646A (en) * | 2011-07-06 | 2013-01-09 | Joy Mm Delaware Inc | Breaker pick retainer |
-
2014
- 2014-07-22 CN CN201410348745.7A patent/CN104148140B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19505210A1 (en) * | 1995-02-16 | 1996-08-22 | Alfred Siemer | Changing systems for treating worn or defective nip or processor rollers |
| WO1996029149A1 (en) * | 1995-03-22 | 1996-09-26 | Mmd Design & Consultancy Limited | Mineral breaker |
| CN101823011A (en) * | 2010-03-23 | 2010-09-08 | 中信重工机械股份有限公司 | Stud type roll surface structure for rolling mill and method for replacing stud |
| CN202006446U (en) * | 2011-03-15 | 2011-10-12 | 益阳橡胶塑料机械集团有限公司 | Device for detaching oilless bearing |
| GB2492646A (en) * | 2011-07-06 | 2013-01-09 | Joy Mm Delaware Inc | Breaker pick retainer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114559403A (en) * | 2022-02-25 | 2022-05-31 | 中信重工机械股份有限公司 | Nail puller for quickly replacing roller surface stud of stud roller and nail replacing method |
| WO2023199164A1 (en) * | 2022-04-14 | 2023-10-19 | Weir Minerals Netherlands B.V. | Stud installation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104148140B (en) | 2016-09-07 |
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