CN104192579A - Method for replacing material taking machine jackstay and material taking machine jackstay used for method - Google Patents
Method for replacing material taking machine jackstay and material taking machine jackstay used for method Download PDFInfo
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- CN104192579A CN104192579A CN201410410241.3A CN201410410241A CN104192579A CN 104192579 A CN104192579 A CN 104192579A CN 201410410241 A CN201410410241 A CN 201410410241A CN 104192579 A CN104192579 A CN 104192579A
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- reclaimer
- strut
- large arm
- crane
- remove
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Abstract
The invention discloses a method for replacing a material taking machine jackstay and the material taking machine jackstay for the method. The method includes the following detailed steps that step1, supports are installed; step2, a balance weight pull rod is detached; step3, a big arm pull rod is detached; step4, the material taking machine jackstay is detached; step5, a new material taking machine jackstay is installed; step6, the big arm pull rod is installed; step7, the balance weight pull rod is installed; step8, the supports are detached. The material taking machine jackstay comprises two girders, an upper beam and a lower beam. The upper beam is fixed to the tops of the two girders, the lower beam is fixed to the bottoms of the two girders, and reinforcement beams are further arranged at equal intervals between the two girders. Cover plates are arranged at the tops of the upper beam and the lower beam, and water leakage holes are formed in the reinforcement beams. Hinged point lug plates are welded to the tops of the two girders. The replacing problem of a traditional material taking machine jackstay can be effectively solved, and the material taking machine jackstay has the advantages of being reasonable in stress, not prone to being corroded and easy to construct.
Description
Technical field
The present invention relates to a kind of reclaimer strut of changing the method for reclaimer strut and using, belong to mechanical equipment field.
Background technology
Reclaimer is the ancestor of the modern chemical industry sparetime university bulk material high-efficiency appliance of handling continuously, has been widely used in the stacking and taking operation in the bulk cargo storage stock grounds such as harbour, harbour, metallurgy, cement, steel plant, coke-oven plant, coal storage plant, power plant at present.The reclaimer that a lot of areas are used is at present all the KL-7 type reclaimer that initial stage eighties Dalian manufactures and designs, and equipment height overall is 24 meters, 414 tons of gross weights, and 35 meters of jib-lengths, 22.3 meters of afterbody spans, balance weight is 55 tons.Due to generation equipment design year early, wherein the design of supporting rod part separation structure is not too reasonable, has certain optimization space, is in particular in: strut lower and upper cross-member place ponding causes root corrosion serious; Strut girder is double flute steel splicing construction, stressed not quite reasonable; The upper and lower hinge otic placode of strut is riveted structure, and during making, accuracy requirement is large compared with high difficulty of construction.
Summary of the invention
The object of the invention is to, a kind of reclaimer strut of changing the method for reclaimer strut and using is provided, it can effectively solve the problem that traditional reclaimer is changed reclaimer strut, and reclaimer strut has advantages of reasonable stress, not perishable and be easy to construction.
Technical scheme of the present invention: a kind of method of changing reclaimer strut, specifically comprise the following steps,
Step 1, mounting bracket: by reclaimer cantilever perpendicular to track, the large arm of reclaimer is set level, with crane, coordinate mounting bracket below reclaimer bucket wheel and reclaimer counterweight respectively, and by reclaimer power-off, lay down hydraulic efficiency pressure system oil pressure, at the top of support, lay jack and jacking bracket, the bottom of reclaimer counterweight and jacking bracket are fixed and welded together;
Step 2, remove counterweight pull bar: with shaped steel, weld diagonal ligament and reclaimer strut and the large arm of reclaimer are connected and fixed, with crane, coordinate reclaimer cantilever is slowly sling, the tension force of counterweight pull bar is eliminated, when counterweight pull bar starts lower when curved, reclaimer cantilever support is firm, with crane, coordinate and remove successively counterweight pull bar;
Step 3, remove large arm brace: with crane, hang the vertex of reclaimer strut, remove the diagonal ligament in step 2, the direction by reclaimer strut integral body to reclaimer bucket wheel (1) tilts, until large arm brace, start when sagging, with crane, coordinate and remove successively from bottom to up large arm brace;
Step 4, remove reclaimer strut: when removing large arm brace, with crane traction, reclaimer strut was slowly fallen to a side of reclaimer bucket wheel, when large arm brace is torn open to last two joint, start to remove the bearing pin of reclaimer strut bottom, with crane, coordinate reclaimer strut overall pulling down;
Step 5, new reclaimer strut is installed: first the large arm brace of last two joint and new reclaimer strut are assembled, with crane, coordinate new reclaimer strut and the large arm brace integral installation of two joints to the original position on the large arm of reclaimer, with pulling out rope by the new reclaimer strut fixation after installation, pull out on rope and connect respectively a guide chain for adjusting strut angle, be convenient to pull bar and install;
Step 6, large arm brace is installed: with three cranes, coordinate large arm brace is installed, wherein a crane draws the large arm brace of a joint being connected with strut, other two cranes lift respectively remaining large arm brace, simultaneously by the angle of pulling out the new reclaimer strut of guide chain adjustment on rope, pull bar bearing pin is installed successively, is completed the installation of all large arm braces;
Step 7, counterweight pull bar is installed: after large arm brace installs, again welding diagonal ligament fixes new reclaimer strut, remove the rope that pulls out for fixing new reclaimer strut, with crane, hang the head of reclaimer cantilever to adjust the distance between new reclaimer strut and reclaimer counterweight, with crane, coordinate counterweight pull bar is installed;
Step 8, striking: remove the diagonal ligament of installing in step 7, press in reclaimer amplitude oil cylinder, until jack does not stress, the jack of a top of the trellis is withdrawn from, remove jacking bracket, striking; Reclaimer power transmission, sails out of construction area, test run, touch-up paint.
In the method for aforesaid this replacing reclaimer strut, described step 1 support install rear use pull out rope be fixed; Jacking bracket is welded on to the both sides of reclaimer counterweight center of gravity.
In the method for aforesaid this replacing reclaimer strut, in described step 2, diagonal ligament adopts 150x150H shaped steel to be welded; When removing counterweight pull bar, pull bar bearing pin adopts destructive dismounting.
In the method for aforesaid this replacing reclaimer strut, in described step 4, when handling reclaimer strut, need be fixed the large arm brace of two joints.
The reclaimer strut using in method described in a kind of aforementioned any one, comprise two girders, entablatrance and cross sills, entablatrance is fixed on the top of two girders, cross sill is fixed on the bottom of two girders, on two girders, be also provided with the reinforcing crossmember of equidistant layout, the top of entablatrance and cross sill is equipped with cover plate, and reinforcing crossmember is provided with water seepage hole; The top of two girders is all welded with hinge otic placode.
In aforesaid this reclaimer strut, between described entablatrance and adjacent reinforcing crossmember, be provided with between oblique stirrup, 2 reinforcing crossmembers of arbitrary neighborhood and be provided with oblique stirrup, between cross sill and adjacent reinforcing crossmember, be provided with oblique stirrup.
In aforesaid this reclaimer strut, girder, entablatrance and cross sill all adopt box beam.
In aforesaid this reclaimer strut, the material of girder, entablatrance and cross sill is Q345 low-alloy steel.
Compared with prior art, the invention provides a kind of method of changing reclaimer strut, by the method, can, by old quick, safe the changing of reclaimer strut, guarantee the use safety of reclaimer.By autonomous improved reclaimer strut efficiently solve that traditional reclaimer strut is perishable, intensity difference and not easy working problem.
Girder, entablatrance and cross sill all adopt box beam, make its cross section have large anti-twisting property, can better improve strut main structure distribution of stress; The material of girder, entablatrance and cross sill is Q345 low-alloy steel, can in the situation that total weight remains unchanged substantially, increase structural strength; Change hinge otic placode into integral solder structure, the constant difficulty of construction of structural strength reduces; At strut lower and upper cross-member, place adds cover plate, and reinforcing crossmember is provided with water seepage hole can effectively prevent that ponding, long-pending coal from causing structure corrosion;
Because former reclaimer pole structure is in poor shape, can not operate at full capacity, and need to regularly keep in repair, need to expend a large amount of manpower and materials, and have a strong impact on production.The first, structure and welding bead cracking need periodical maintenance to reinforce repair welding; The second, structure is amassed coal, ponding place needs periodic cleaning, and carries out anti-corrosion treatment.And above two maintenances all need reclaimer to carry out shutdown maintenance, and strut maintenance is aloft work, need to take a large amount of safety measures, and a step causes maintenance activity time expand.To carry out once strut comprehensively the first quarter, detect maintenance calculating; need reclaimer to shut down Liang Ge work team; 16 hours; it is 1800t/ hour that first phase reclaimer is got coal ability; Single Maintenance just affects handling production 28800t like this; suppose that 2 yuan/t of freight rate calculates; reduce like this Single Maintenance and can bring approximately 60,000 yuan of benefits; also have in addition approximately 5000 to 8000 yuan of personnel's vehicle costs that also have therefore generation of each service expenditure etc.; by the improved reclaimer of the present invention, do not need these periodical maintenances, within such 1 year, direct economic benefit is over 300,000 yuan.
Accompanying drawing explanation
Structural representation when Fig. 1 is dismounting strut;
Fig. 2 is structural representation when strut is installed;
Fig. 3 is the front view of reclaimer strut;
Fig. 4 is the lateral plan of reclaimer strut;
Fig. 5 be in Fig. 3 B-B to view;
Fig. 6 be in Fig. 3 C-C to view.
Being labeled as in accompanying drawing: 1-reclaimer bucket wheel, 2-reclaimer counterweight, 3-support, 4-diagonal ligament, 5-reclaimer strut, 6-reclaimer cantilever, the large arm of 7-reclaimer, 8-counterweight pull bar, the large arm brace of 9-, 10-hinge otic placode, 11-pulls out rope, 12-guide chain, 13-girder, 14-entablatrance, 15-cross sill, 16-reinforcing crossmember, 17-cover plate, 18-water seepage hole, the oblique stirrup of 19-.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated, but not as the foundation to the present invention's restriction.
Embodiments of the invention: a kind of method of changing reclaimer strut, specifically comprise the following steps,
Step 1, mounting bracket: as shown in Figure 1, by reclaimer cantilever 6, perpendicular to track, the large arm 7 of reclaimer is set level, and with two 50 tons of cranes, coordinates laying bracket 3 below reclaimer bucket wheel 1 and reclaimer counterweight 2 respectively, with pulling out rope fixed support 3, and by reclaimer power-off, lay down hydraulic efficiency pressure system oil pressure, at the top of support 3, lay jack and jacking bracket, by the bottom of reclaimer counterweight 2 and the fixing welding of jacking bracket, jacking bracket is welded on the both sides of reclaimer counterweight center of gravity;
Step 2, remove counterweight pull bar: with 150x150H shaped steel welding diagonal ligament 4, reclaimer strut 5 and the large arm 7 of reclaimer are connected and fixed, with two 150 tons of cranes, coordinate reclaimer cantilever 6 is slowly sling, the tension force of counterweight pull bar 8 is eliminated, when counterweight pull bar 8 starts lower when curved, reclaimer cantilever 6 is supported firmly, with 90t crane, coordinate and remove successively counterweight pull bar 8 with two 50t cranes, pull bar bearing pin adopts destructive dismounting where necessary;
Step 3, remove large arm brace: the vertex that hangs reclaimer strut 5 with 150 tons of cranes, remove the diagonal ligament 4 in step 2, direction by from reclaimer strut 5 integral body to reclaimer bucket wheel 1 tilts, until large arm brace 9, start when sagging, with 50 tons of cranes and 90 tons of cranes cooperations, to remove successively from bottom to up large arm brace 9;
Step 4, remove strut: when removing large arm brace 9, with the traction of 150 tons of cranes by reclaimer strut 5 forward a side of reclaimer bucket wheel 1 slowly fell, when large arm brace 9 is torn open to last two joint, start to remove the bearing pin of reclaimer strut 5 bottoms, with 150 tons of cranes, coordinate reclaimer strut 5 overall pulling downs with 90t crane, during handling reclaimer strut 5, need be fixed the large arm brace 9 of two joints, form is as figure;
Step 5, new strut is installed: first the large arm brace 9 of last two joint is assembled with new reclaimer strut, with 150 tons of cranes, coordinate with 90t crane new reclaimer strut and large arm brace 9 integral installations of two joints to the original position on the large arm 7 of reclaimer, with pulling out rope 11 by the new reclaimer strut fixation after installation, pull out on rope 11 and connect respectively 5 tons of guide chains 12 for adjusting reclaimer strut angle, be convenient to pull bar and install;
Step 6, large arm brace is installed: as shown in Figure 2,90t crane and two 50t cranes coordinate installs large arm brace 9, the large arm brace 9 of a joint that the traction of 90t crane is connected with reclaimer strut, two 50t cranes lift respectively remaining large arm brace 9, by the angle of pulling out the new reclaimer strut of 5 tons of guide chains, 12 adjustment on rope 11, pull bar bearing pin is installed successively simultaneously, is completed the installation of all large arm braces 9;
Step 7, counterweight pull bar is installed: after large arm brace 9 installs, again welding diagonal ligament fixes new reclaimer strut, remove for pulling out of fixing new reclaimer strut and restrict 11, with 225t crane, hang the head of reclaimer cantilever 6 to adjust the distance between new reclaimer strut and reclaimer counterweight 2,90t crane coordinates with two 50t cranes installs counterweight pull bar;
Step 8, striking: remove the diagonal ligament of installing in step 7, press in reclaimer amplitude oil cylinder, until jack does not stress, the jack at support 3 tops is withdrawn from, remove jacking bracket, striking 3; Reclaimer power transmission, sails out of construction area, test run, touch-up paint.
The reclaimer strut using in a kind of preceding method, as shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, comprise two girders 13, entablatrance 14 and cross sill 15, entablatrance 14 is fixed on the top of two girders 13, cross sill 15 is fixed on the bottom of two girders 13, two girders 13 are also provided with the reinforcing crossmember 16 of equidistant layout, and the top of entablatrance 14 and cross sill 15 is equipped with cover plate 17, and reinforcing crossmember 16 is provided with water seepage hole 18; The top of two girders 13 is all welded with hinge otic placode 10.
Between described entablatrance 14 and adjacent reinforcing crossmember 16, be provided with between oblique stirrup 19,2 reinforcing crossmembers 16 of arbitrary neighborhood and be provided with oblique stirrup 19, between cross sill 15 and adjacent reinforcing crossmember 16, be provided with oblique stirrup 19.Girder 13, entablatrance 14 and cross sill 15 all adopt box beam.The material of girder 13, entablatrance 14 and cross sill 15 is Q345 low-alloy steel.At entablatrance 14 tops, increase maintenance, inspection platform, be convenient to the damageable zones such as top hinge, steel structure dead angle to carry out periodic inspection and maintenance.
Claims (8)
1. a method of changing reclaimer strut, is characterized in that: specifically comprises the following steps,
Step 1, mounting bracket: by reclaimer cantilever (6) perpendicular to track, the large arm of reclaimer (7) is set level, with crane, coordinate respectively the below mounting bracket (3) in the large arm of reclaimer (7) and reclaimer counterweight (2), and by reclaimer power-off, lay down hydraulic efficiency pressure system oil pressure, at the top of support (3), lay jack and jacking bracket, bottom and the jacking bracket of reclaimer counterweight (2) are fixed and welded together;
Step 2, remove counterweight pull bar: with shaped steel, weld diagonal ligament (4) and reclaimer strut (5) and the large arm of reclaimer (7) are connected and fixed, with crane, coordinate reclaimer cantilever (6) is sling, the tension force of counterweight pull bar (8) is eliminated, when counterweight pull bar (8) starts lower when curved, reclaimer cantilever (6) is supported firmly, with crane, coordinate and remove successively counterweight pull bar (8);
Step 3, remove large arm brace: the vertex that hangs reclaimer strut (5) with crane, remove the diagonal ligament (4) in step 2, the whole direction to reclaimer bucket wheel (1) of reclaimer strut (5) is tilted, until large arm brace (9), start when sagging, with crane, coordinate and remove successively from bottom to up large arm brace (9);
Step 4, remove reclaimer strut: when removing large arm brace (9), with crane traction, reclaimer strut (5) is sidelong down to one of reclaimer bucket wheel (1), when large arm brace (9) is torn open to last two joint, start to remove the bearing pin of reclaimer strut (5) bottom, with crane, coordinate reclaimer strut (5) overall pulling down;
Step 5, new reclaimer strut is installed: first the last two large arm braces of joint (9) and new reclaimer strut are assembled, with crane, coordinate new reclaimer strut and two joint large arm brace (9) integral installations are arrived to the original position on the large arm of reclaimer (7), with pulling out rope (11) by the new reclaimer strut fixation after installation, pull out on rope (11) and connect respectively a guide chain (12) for adjusting strut angle, be convenient to pull bar and install;
Step 6, large arm brace is installed: with three cranes, coordinate large arm brace (9) is installed, wherein a crane draws the joint large arm brace (9) being connected with strut, other two cranes lift respectively remaining large arm brace (9), use the guide chain (12) of pulling out on rope (11) to adjust the angle of new reclaimer strut simultaneously, pull bar bearing pin is installed successively, is completed the installation of all large arm braces (9);
Step 7, counterweight pull bar is installed: after large arm brace (9) installs, again welding diagonal ligament fixes new reclaimer strut, remove and to pull out rope (11) for fixing new reclaimer strut, with crane, hang the head of reclaimer cantilever (6) to adjust the distance between new reclaimer strut and reclaimer counterweight (2), with crane, coordinate counterweight pull bar is installed;
Step 8, striking: remove the diagonal ligament of installing in step 7, press in reclaimer amplitude oil cylinder, until jack does not stress, the jack at support (3) top is withdrawn from, remove jacking bracket, striking (3); Reclaimer power transmission, sails out of construction area, test run, touch-up paint.
2. a kind of method of changing reclaimer strut according to claim 1, is characterized in that: described step 1 support (3) installs rear use and pulls out rope and be fixed; Jacking bracket is welded on to the both sides of reclaimer counterweight (2) center of gravity.
3. a kind of method of changing reclaimer strut according to claim 2, is characterized in that: in described step 2, diagonal ligament (4) adopts 150x150H shaped steel to be welded; When removing counterweight pull bar (8), pull bar bearing pin adopts destructive dismounting.
4. a kind of method of changing reclaimer strut according to claim 3, is characterized in that: in described step 4, when handling reclaimer strut (5), need be fixed the large arm brace of two joints (9).
5. the reclaimer strut using in method described in any one in a claim 1～4, comprise two girders (13), entablatrance (14) and cross sill (15), it is characterized in that: entablatrance (14) is fixed on the top of two girders (13), cross sill (15) is fixed on the bottom of two girders (13), on two girders (13), be also provided with the reinforcing crossmember (16) of equidistant layout, the top of entablatrance (14) and cross sill (15) is equipped with cover plate (17), and reinforcing crossmember (16) is provided with water seepage hole (18); The top of two girders (13) is all welded with hinge otic placode (10).
6. a kind of reclaimer strut according to claim 5, it is characterized in that: between described entablatrance (14) and adjacent reinforcing crossmember (16), be provided with between oblique stirrup (19), 2 reinforcing crossmembers of arbitrary neighborhood (16) and be provided with oblique stirrup (19), between cross sill (15) and adjacent reinforcing crossmember (16), be provided with oblique stirrup (19).
7. according to a kind of reclaimer strut described in claim 5 or 6, it is characterized in that: girder (13), entablatrance (14) and cross sill (15) all adopt box beam.
8. a kind of reclaimer strut according to claim 7, is characterized in that: the material of girder (13), entablatrance (14) and cross sill (15) is Q345 low-alloy steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410410241.3A CN104192579B (en) | 2014-08-20 | 2014-08-20 | Method for replacing material taking machine jackstay and material taking machine jackstay used for method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410410241.3A CN104192579B (en) | 2014-08-20 | 2014-08-20 | Method for replacing material taking machine jackstay and material taking machine jackstay used for method |
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| Publication Number | Publication Date |
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| CN104192579A true CN104192579A (en) | 2014-12-10 |
| CN104192579B CN104192579B (en) | 2017-02-15 |
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| CN201410410241.3A Active CN104192579B (en) | 2014-08-20 | 2014-08-20 | Method for replacing material taking machine jackstay and material taking machine jackstay used for method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107416547A (en) * | 2017-05-23 | 2017-12-01 | 五冶集团上海有限公司 | A kind of Anti-knocking method that ship unloaders cantilever girder is removed |
| CN107444935A (en) * | 2017-06-19 | 2017-12-08 | 五冶集团上海有限公司 | A kind of Anti-knocking method that ship unloaders cantilever girder pull bar is removed |
| CN110406987A (en) * | 2019-06-24 | 2019-11-05 | 太重（天津）滨海重型机械有限公司 | Stacker-reclaimer |
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| CN101949211B (en) * | 2010-10-29 | 2012-01-04 | 中建三局建设工程股份有限公司 | Low-position few-fulcrum modularized integral jacking steel platform formwork system |
| CN103950741A (en) * | 2014-04-30 | 2014-07-30 | 钦州学院 | Bucket-wheel material stacking and taking machine containing two-degree-of-freedom closed chain type electric pitching mechanism |
| CN103950740A (en) * | 2014-04-30 | 2014-07-30 | 钦州学院 | Link mechanism type bucket wheel stacker-reclaimer with two large-activity working spaces |
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| CN2679123Y (en) * | 2002-12-19 | 2005-02-16 | 胡建锋 | Internally creeping tower crane |
| CN201058768Y (en) * | 2007-07-10 | 2008-05-14 | 大连华锐股份有限公司 | Articulated type pitching steelwork tower truss |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107416547A (en) * | 2017-05-23 | 2017-12-01 | 五冶集团上海有限公司 | A kind of Anti-knocking method that ship unloaders cantilever girder is removed |
| CN107444935A (en) * | 2017-06-19 | 2017-12-08 | 五冶集团上海有限公司 | A kind of Anti-knocking method that ship unloaders cantilever girder pull bar is removed |
| CN107444935B (en) * | 2017-06-19 | 2020-05-01 | 五冶集团上海有限公司 | Anti-collision method for dismantling pull rod of cantilever girder of ship unloader |
| CN110406987A (en) * | 2019-06-24 | 2019-11-05 | 太重（天津）滨海重型机械有限公司 | Stacker-reclaimer |
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| CN104192579B (en) | 2017-02-15 |
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