CN104568267A - Detection device and method for pre-tightening force of foot roller of extra-thick plate blank crystallizer - Google Patents
Detection device and method for pre-tightening force of foot roller of extra-thick plate blank crystallizer Download PDFInfo
- Publication number
- CN104568267A CN104568267A CN201410765337.1A CN201410765337A CN104568267A CN 104568267 A CN104568267 A CN 104568267A CN 201410765337 A CN201410765337 A CN 201410765337A CN 104568267 A CN104568267 A CN 104568267A
- Authority
- CN
- China
- Prior art keywords
- frame
- hydraulic cylinder
- separate type
- piston
- bolt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000001514 detection method Methods 0.000 title claims abstract description 9
- 239000002828 fuel tank Substances 0.000 claims abstract description 8
- 230000036316 preload Effects 0.000 claims description 8
- 230000005483 Hooke's law Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000009749 continuous casting Methods 0.000 abstract description 2
- 238000009628 steelmaking Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 1
- 238000005266 casting Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention relates to a detection device and method for the pre-tightening force of a foot roller of an extra-thick plate blank crystallizer and belongs to the technical field of steelmaking and continuous casting. The detection device comprises a piston, a piston fixing bolt, a rectangular gasket, a separating lower frame, a separating left frame 5, a hydraulic cylinder body, a sealing ring, a frame handle bolt, a frame handle, a roller type ejector header, a frame fixing bolt, a separating upper frame, a separating right frame, a tee fitting, a pressure gage, a two-position hand-operated direction valve, a fuel tank, a one-way valve and limit screws. The detection device has the advantages that the detection device is convenient to separate, and a hydraulic cylinder is convenient to disassemble and assemble; the whole equipment is convenient to assemble, disassemble and carry; the bolt pre-tightening force can be calculated through the product of the reading of the pressure gage and the active area of the hydraulic cylinder, and the expansion length of a butterfly spring can be measured by a micrometer; whether the foot roller of the crystallizer meets the requirement of a process on the controls parameters of the butterfly spring or not is conveniently verified.
Description
Technical field
The invention belongs to steel-making continuous casting technical field, particularly a kind of pick-up unit of extra-thick plate blank crystallizer foot roll pretightning force and method.
Background technology
Time first Qin 3# extra-thick slab casting machine produces 350mm, 400mm extra-thick plate blank, because ferrostatic pressure is comparatively large, base shell very thin after going out crystallizer is pushed outwardly, and is therefore easy to occur leptoprosopy bulge effect.This defect can bring very large disadvantage to Rolling production, easily causes that plate size is overproof, steel plate bead defective etc.Through actual measurement, the maximum bulge amount of the 400mm strand leptoprosopy produced during first Qin 3# extra-thick slab casting machine hot type reaches 20mm.
Crystallizer foot roll plays support guide effect to strand, and the high temperature casting blank solidification base shell going out crystallizer is thinner as can not get cooling in time and supporting, and very easily produces bulge and distortion, seriously bleed-out can occur under ferrostatic pressure effect.For providing rational support, need compress crystallizer foot roll butterfly spring provides pretightning force, and apparatus of the present invention can detect pretightening force of butterfly spring and whether meet the requirement of technique to crystallizer butterfly spring controling parameters.
Summary of the invention
The object of the present invention is to provide a kind of pick-up unit and method of extra-thick plate blank crystallizer foot roll pretightning force.Solve the decision problem whether pretightening force of butterfly spring mates butterfly spring controling parameters with technique.
A pick-up unit for extra-thick plate blank crystallizer foot roll pretightning force, comprises piston 1, piston set bolt 2, rectangular washer 3, separate type underframe 4, separate type left frame 5, hydraulic cylinder body 6, O-ring seal 7, frame handle bolt 8, frame handle 9, roll shape top 10, framework set bolt 11, separate type upper frame 12, separate type correct frame 13, three-way connection 14, tensimeter 15, two hand-operated direction valves 16, fuel tank 17, retaining valve 18, limited screws 19.Separate type upper frame 12 and separate type underframe 4 embed in separate type left frame 5 and separate type correct frame 13 respectively, are fixed by framework set bolt 11; Piston 1 is connected by piston set bolt 2 and rectangular washer 3 with Split base 4; Frame handle 9 is connected with separate type left frame 5 and separate type correct frame 13 respectively by frame handle bolt 8; Piston 1 is in hydraulic cylinder body 6, and O-ring seal 7 is on piston 1; Limited screw 19 is in hydraulic cylinder body 6 bottom; Tensimeter 15 is connected by three-way connection 14 with hydraulic cylinder body 6; Roll shape top 10 is connected with hydraulic cylinder body 6 top; Retaining valve 18, two hand-operated direction valves 16 are connected by fluid pressure line successively with fuel tank 17; Retaining valve 18 is connected with three-way connection 14.
Use the step of said apparatus detection extra-thick plate blank crystallizer foot roll pretightning force as follows:
1, the pretension bolt 24 of crystallizer foot roll 20 is compressed butterfly spring 22 by pre-load nut 26 to be fastened on sufficient roller bracing frame 21, then by sufficient roller hold-down nut 25, crystallizer foot roll 20 is fixed on measurement mechanism;
The reading of the slide calliper rule 23 when 2, first not stressing with crystallizer foot roll 20 is designated as benchmark zero point, is given hydraulic cylinder epicoele injection liquid force feed and is applied oil pressure, come directly towards 10 pairs of crystallizer foot rolls 20 apply force compresses butterfly spring 22 by roll shape by retaining valve 18;
3, oil pressure P is read by tensimeter 15
1, known piston 1 useful area is A, then crystallizer foot roll 20 is stressed is Y
1=P
1* A, records the reading X at now relative datum zero point with slide calliper rule 23
1;
4, hydraulic cylinder epicoele oil pressure is strengthened again, tensimeter 15 reading P
2, then crystallizer foot roll 20 is stressed is Y
2=P
2* A, records the reading X at now relative datum zero point with slide calliper rule 23
2;
5, according to Hooke's law Y=KX+F
0, wherein X represents spring displacement amount, and Y represents the elastic force of corresponding displacement, and k is stiffness factor, F
0for initial tension of spring, bring twice reading into Hooke's law, can F be obtained
0;
6, F is verified
0whether meet technological requirement, if do not meet, adjust pretightning force by pre-load nut 26, until meet technological requirement;
7, after detection terminates, by the pressure release of two hand-operated direction valves 16.
The invention has the advantages that: can be convenient to be separated, hydraulic cylinder is convenient to dismounting; Integral device is convenient to dismounting and is carried; Bolt pretightening calculates by pressure gauge reading and hydraulic cylinder useful area product, and butterfly spring collapsing length measures by milscale, and whether convenient checking crystallizer foot roll meets the requirement of technique to butterfly spring controling parameters.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.Wherein, piston 1, piston set bolt 2, rectangular washer 3, separate type underframe 4, separate type left frame 5, hydraulic cylinder body 6, O-ring seal 7, frame handle bolt 8, frame handle 9, roll shape top 10, framework set bolt 11, separate type upper frame 12, separate type correct frame 13, three-way connection 14, tensimeter 15, two hand-operated direction valves 16, fuel tank 17, retaining valve 18, limited screws 19.
Fig. 2 is using state schematic diagram of the present invention.Wherein, piston 1, piston set bolt 2, rectangular washer 3, separate type underframe 4, separate type left frame 5, hydraulic cylinder body 6, O-ring seal 7, frame handle bolt 8, frame handle 9, roll shape top 10, framework set bolt 11, separate type upper frame 12, separate type correct frame 13, three-way connection 14, tensimeter 15, two hand-operated direction valves 16, fuel tank 17, retaining valve 18, limited screw 19, crystallizer foot roll 20, sufficient roller bracing frame 21, butterfly spring 22, slide calliper rule 23, pretension bolt 24, sufficient roller hold-down nut 25, pre-load nut 26.
Embodiment
Embodiment 1
Crystallizer foot roll pretightning force device of the present invention, comprise Split base 4, piston 1, retaining valve 18, wherein: described piston 1 installs O-ring seal 7 and coordinates with hydraulic cylinder 6 and install, then install limited screw 19, three-way connection 14 is fixedly connected with hydraulic cylinder 6.Tensimeter 15 is connected with three-way connection 14.Roll shape top 10 is connected with hydraulic cylinder body 6, described Split base 4 is connected with piston 1 by piston set bolt 2 rectangular washer 3, Split base 4 and separate type left frame 5 are connected and fixed by framework set bolt 11, frame handle 9 is connected and fixed by handle set bolt 9, described separate type left frame 5 is connected by framework set bolt 11 with separate type upper frame 12, and described separate type correct frame is fixedly connected with separate type underframe 4 respectively at separate type upper frame 12 by 11.Described retaining valve 18 is connected by fluid pressure line with two hand-operated direction valves and fuel tank, is connected after finally being gone out by retaining valve 18 with three-way connection.
For the thick crystallizer of 400mm, according to technological requirement, tackling sufficient roller applying pretightning force by pre-load nut 26 is 16.8KN, for whether checking pretightning force meets technological requirement need test to it, during use, see Fig. 2, first the pretension bolt 24 of crystallizer foot roll 20 being compressed butterfly spring 22 by pre-load nut 26 is fastened on sufficient roller bracing frame 21, by sufficient roller hold-down nut 25 crystallizer foot roll 20 is fixed on measurement mechanism again and ties, the reading of the slide calliper rule 23 when first not stressing with crystallizer foot roll 20 is designated as benchmark zero point, give hydraulic cylinder epicoele injection liquid force feed by retaining valve 18 and apply oil pressure, come directly towards 10 pairs of crystallizer foot rolls 20 by roll shape and apply force compresses butterfly spring 22, now read oil pressure P by tensimeter
1=3Mpa, hydraulic cylinder piston useful area is A=25.43cm
3, then crystallizer foot roll is stressed is Y
1=P
1* A=19.10KN, with the number of degrees X at slide calliper rule record now relative datum zero point
1=1.18mm, strengthen hydraulic cylinder epicoele oil pressure again, tensimeter number of degrees P
2=3.5Mpa, then pressure Y
2=P
2* A=22.85KN, the slide calliper rule relative datum number of degrees at zero point are X
2=3.18mm, according to Hooke's law Y=KX+F
0, wherein X represents spring displacement amount, and Y represents the elastic force of corresponding displacement, F
0for initial tension of spring, bring twice reading into Hooke's law formula, can F be obtained
0=16.89KN, in order to ensure the accuracy of survey calculation value, work above general repetition, cumulative calculation three initial tension of spring, obtain mean value, and compare, if relative error is not more than 5% with the pretightning force of technological requirement foot roller 16.80KN.Detection terminates the pressure release of rear hand-operated direction valve 16.If relative error is greater than 5% adjust pretightning force by pre-load nut 26, until meet technological requirement.
Claims (2)
1. the pick-up unit of an extra-thick plate blank crystallizer foot roll pretightning force, it is characterized in that, comprise piston (1), piston set bolt (2), rectangular washer (3), separate type underframe (4), separate type left frame (5), hydraulic cylinder body (6), O-ring seal (7), frame handle bolt (8), frame handle (9), roll shape top (10), framework set bolt (11), separate type upper frame (12), separate type correct frame (13), three-way connection (14), tensimeter (15), two hand-operated direction valves (16), fuel tank (17), retaining valve (18), limited screw (19), separate type upper frame (12) and separate type underframe (4) embed in separate type left frame (5) and separate type correct frame (13) respectively, are fixed by framework set bolt (11), piston (1) is connected by piston set bolt (2) and rectangular washer (3) with Split base (4), frame handle (9) is connected with separate type left frame (5) and separate type correct frame (13) respectively by frame handle bolt (8), piston (1) is in hydraulic cylinder body (6), and O-ring seal (7) is on piston (1), limited screw (19) is in hydraulic cylinder body (6) bottom, tensimeter (15) is connected by three-way connection (14) with hydraulic cylinder body (6), roll shape top (10) is connected with hydraulic cylinder body (6) top, retaining valve (18), two hand-operated direction valves (16) are connected by fluid pressure line successively with fuel tank (17), retaining valve (18) is connected with three-way connection (14).
2. adopt device described in claim 1 to detect a method for extra-thick plate blank crystallizer foot roll pretightning force, it is characterized in that, detecting step is as follows:
(1) pretension bolt (24) of crystallizer foot roll (20) is fastened on sufficient roller bracing frame (21) by pre-load nut (26) compression butterfly spring (22), then by sufficient roller hold-down nut (25), crystallizer foot roll (20) is fixed on measurement mechanism;
(2) reading of the slide calliper rule (23) when first not stressing with crystallizer foot roll (20) is designated as benchmark zero point, apply oil pressure by retaining valve (18) to hydraulic cylinder epicoele injection liquid force feed, by roll shape top (10), force compresses butterfly spring (22) is applied to crystallizer foot roll (20)
(3) oil pressure P is read by tensimeter (15)
1, known piston (1) useful area is A, then crystallizer foot roll (20) is stressed is Y
1=P
1* A, records the reading X at now relative datum zero point with slide calliper rule (23)
1;
(4) hydraulic cylinder epicoele oil pressure is strengthened again, tensimeter (15) reading P
2, then crystallizer foot roll (20) is stressed is Y
2=P
2* A, records the reading X at now relative datum zero point with slide calliper rule (23)
2;
(5) according to Hooke's law Y=KX+F
0, wherein X represents spring displacement amount, and Y represents the elastic force of corresponding displacement, and k is stiffness factor, F
0for initial tension of spring, bring twice reading into Hooke's law, can F be obtained
0;
(6) F is verified
0whether meet technological requirement, when not meeting, by pre-load nut (26) adjustment pretightning force, until meet technological requirement;
(7) after detection terminates, by the pressure release of two hand-operated direction valves (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410765337.1A CN104568267B (en) | 2014-12-12 | 2014-12-12 | A kind of detection device and method of extra-thick plate blank crystallizer foot roll pretightning force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410765337.1A CN104568267B (en) | 2014-12-12 | 2014-12-12 | A kind of detection device and method of extra-thick plate blank crystallizer foot roll pretightning force |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104568267A true CN104568267A (en) | 2015-04-29 |
| CN104568267B CN104568267B (en) | 2016-12-07 |
Family
ID=53084854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410765337.1A Active CN104568267B (en) | 2014-12-12 | 2014-12-12 | A kind of detection device and method of extra-thick plate blank crystallizer foot roll pretightning force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104568267B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149930A (en) * | 2015-10-12 | 2015-12-16 | 沈阳航天新光集团有限公司 | Pre-tightening force loading device |
| CN113063568A (en) * | 2019-12-12 | 2021-07-02 | 中车唐山机车车辆有限公司 | Piston valve damping detection method, terminal equipment and storage medium |
| CN114227585A (en) * | 2021-12-30 | 2022-03-25 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Air pressure type plunger assembly spring pre-tightening force measuring and assembling device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005110649A1 (en) * | 2004-05-18 | 2005-11-24 | Etp Transmission Ab | Friction coupling, friction assembly and press table comprising a friction coupling, and a method |
| CN201177541Y (en) * | 2008-04-25 | 2009-01-07 | 中国北车集团大同电力机车有限责任公司 | Force-measuring device |
| CN202631174U (en) * | 2012-05-29 | 2012-12-26 | 唐山德泰机械制造有限公司 | Steel tie rod tensioning force measuring device |
| CN103364117A (en) * | 2012-04-01 | 2013-10-23 | 中钢设备有限公司 | Experimental device for soft clamp force of slab crystallizer |
| CN203908773U (en) * | 2014-06-24 | 2014-10-29 | 上海帆特机电设备制造有限公司 | Clamping mechanism and indicator machine to which clamping mechanism is applied |
| JP2014211443A (en) * | 2014-06-09 | 2014-11-13 | 三菱重工業株式会社 | Separator for high frequency component and low frequency component |
-
2014
- 2014-12-12 CN CN201410765337.1A patent/CN104568267B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005110649A1 (en) * | 2004-05-18 | 2005-11-24 | Etp Transmission Ab | Friction coupling, friction assembly and press table comprising a friction coupling, and a method |
| CN201177541Y (en) * | 2008-04-25 | 2009-01-07 | 中国北车集团大同电力机车有限责任公司 | Force-measuring device |
| CN103364117A (en) * | 2012-04-01 | 2013-10-23 | 中钢设备有限公司 | Experimental device for soft clamp force of slab crystallizer |
| CN202631174U (en) * | 2012-05-29 | 2012-12-26 | 唐山德泰机械制造有限公司 | Steel tie rod tensioning force measuring device |
| JP2014211443A (en) * | 2014-06-09 | 2014-11-13 | 三菱重工業株式会社 | Separator for high frequency component and low frequency component |
| CN203908773U (en) * | 2014-06-24 | 2014-10-29 | 上海帆特机电设备制造有限公司 | Clamping mechanism and indicator machine to which clamping mechanism is applied |
Non-Patent Citations (1)
| Title |
|---|
| 黄军涛等: "板坯结晶器全幅一段和二段电磁制动的数值模拟", 《东北大学学报(自然科学版)》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149930A (en) * | 2015-10-12 | 2015-12-16 | 沈阳航天新光集团有限公司 | Pre-tightening force loading device |
| CN113063568A (en) * | 2019-12-12 | 2021-07-02 | 中车唐山机车车辆有限公司 | Piston valve damping detection method, terminal equipment and storage medium |
| CN113063568B (en) * | 2019-12-12 | 2022-07-26 | 中车唐山机车车辆有限公司 | Piston valve damping detection method, terminal device and storage medium |
| CN114227585A (en) * | 2021-12-30 | 2022-03-25 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Air pressure type plunger assembly spring pre-tightening force measuring and assembling device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104568267B (en) | 2016-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104568267A (en) | Detection device and method for pre-tightening force of foot roller of extra-thick plate blank crystallizer | |
| CN104128581A (en) | Method for calibrating sector sections of slab continuous casting machine online | |
| CN103149024A (en) | Measurement device and method for three-point bending mechanical properties | |
| CN210639007U (en) | Hardness detection device for steel pipe | |
| CN207850806U (en) | A kind of universal testing machine of measurable elasticity modulus | |
| CN115532851A (en) | Hot continuous rolling mill feed-forward thickness control method based on kinetic analysis | |
| CN103323331A (en) | Method for obtaining stress-strain curve of filling body test block through common press | |
| CN203785964U (en) | Digital portable press | |
| CN103528898A (en) | Plate forming performance testing device and method in three-dimensional stress state | |
| CN103592069A (en) | A clamping force detecting tool and a clamping force detecting method for a braking clamp of a railway vehicle | |
| CN102788548A (en) | Steel band planeness test device | |
| CN202442930U (en) | Hardness detecting device | |
| CN202195993U (en) | Hardness testing device | |
| CN203732375U (en) | Tool for hydraulic test for stern shaft tube | |
| CN203356212U (en) | Three-roller centering machine rolling center line detecting device | |
| CN202329965U (en) | Detection device for brake caliper cells | |
| CN205015229U (en) | Removable formula compression test machine | |
| CN204096037U (en) | A kind of supporting construction of hatchcover | |
| CN204165697U (en) | For the tested sensor loader mechanism of superposing type force measuring machine | |
| CN103940673A (en) | Longitudinal tensile and compression testing machine for steel rail of railway track | |
| CN206919860U (en) | A kind of point tongue verifying attachment | |
| CN103712813A (en) | Intelligent tensioning device calibration system | |
| CN201615837U (en) | Detecting device used for detecting skid resistance and damage resistance of steel pipe scaffold fastener | |
| CN207703193U (en) | Flatness detects school type system | |
| CN203426790U (en) | Pneumatic pressure device for detecting distance between part and tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190319 Address after: 063200 Iron and Steel Power Park, Caofeidian Industrial Zone, Tangshan City, Hebei Province Patentee after: Shougang Jingtang United Iron & Steel Co., Ltd. Address before: 066326 Du Zhuang Township, Funing County, Qinhuangdao, Hebei Patentee before: QINHUANGDAO SHOUQIN METAL MATERIAL Co.,Ltd. |
|
| TR01 | Transfer of patent right |