CN102275829B - Frame high-altitude piece mounting method of dry quenching lifter device - Google Patents
Frame high-altitude piece mounting method of dry quenching lifter device Download PDFInfo
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- CN102275829B CN102275829B CN 201110194079 CN201110194079A CN102275829B CN 102275829 B CN102275829 B CN 102275829B CN 201110194079 CN201110194079 CN 201110194079 CN 201110194079 A CN201110194079 A CN 201110194079A CN 102275829 B CN102275829 B CN 102275829B
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Abstract
The invention relates to a frame high-altitude piece mounting method of a dry quenching lifter device. The method comprises the following concrete steps of: lifting the two end beams of a frame piece component and a wheel group connected with the end beams onto a lifter track by use of a truck crane with tonnage of less than or equal to 300; lifting the two girders and accessories of the frame piece component to the position between the two end beams; assembling on a high-altitude construction platform so that the frame assembly work originally performed on the ground is finished at the high altitude; and in the frame assembly process on the high-altitude construction platform, firstly adjusting the space between the two end beams by use of an adjustable end beam fixing device, accurately positioning and mounting the two end beams on the lifter track by use of a wheel fixing device, and connecting the girders and the end beams to finish the mounting of the frame, wherein the accessories include a lower operation platform connected with the first girder and the second girder, and a walking first-level speed reducer arranged on the second girder. Compared with the traditional construction method, the method provided by the invention has the advantages of short construction period, low construction cost and the like, and is beneficial to construction.
Description
Technical field
The present invention relates to frame high-altitude piece mounting method of dry quenching lifter device.
Background technology
The coke dry quenching hoister vehicle frame is comprised of two end carriages, two girders.Traditional gig hanging method, be that vehicle frame is assembled integral hoisting on ground, vehicle frame assembles rear heavy approximately 46 tons, need be lifted on the gig work plane on 45.96 meters high, ground, according to the lifting field condition, need the wheel crane more than 500 tons just can complete the lifting task.And present domestic wheel crane negligible amounts more than 500 tons, lease must be preengage in advance, and affected by other factors, can not arrive on schedule, and then the whole duration of impact.And 500 tons of wheel crane dead weights are heavy, the transportation difficulty, and admission fee is with high.
Just be based on above-mentioned situation, proposition the present patent application.
Summary of the invention
Technical matters to be solved by this invention is: a kind of frame high-altitude piece mounting method of dry quenching lifter device is provided, the method is to utilize the operation platform of setting up on the gig crossbeam, original vehicle frame assembly unit work on ground is changed in the high-altitude complete, be divided into four times with 200～300 tons of wheel cranes and complete and will be originally will change into the work that 500 tons of wheel cranes are completed, actv. has been saved the mechanical one-shift expense.
The present invention solves the technical scheme that its technical matters adopts: adopt≤300 tons of wheel cranes to divide two butt beams of chip part with vehicle frame and the set of wheels that is attached thereto is hung on the gig track, again vehicle frame is divided two girders and the annex of chip part to hang in the middle of two butt beams, then assemble on the operation platform of high-altitude, original vehicle frame assembly working on ground is changed in the high-altitude complete; In high-altitude operation platform assembling vehicle frame process, first utilize the interval between adjustable end beam fixing device adjusting two butt beams, and utilize wheel fixing device with the two accurate location and installation of butt beam on the gig track, then with connection between girder and carriage, complete the installation of vehicle frame; Described annex comprises the bottom operation platform that is connected with the second girder with the first girder, with the traveling first class reducer that is contained on the second girder.
The present invention can adopt the method that comprises the following steps:
(1) set up the high-altitude operation platform:
The high-altitude operation platform is comprised of bracket, H shaped steel, springboard and guardrail, and wherein: bracket is welded on the gig crossbeam, and the two ends of H shaped steel is placed on the bracket surface, and with the welding of gig crossbeam, springboard is laid on H shaped steel surface; At the both sides of H shaped steel welding guardrail; Set up between the gig crossbeam and during welded H section steel, the spacing of H shaped steel distributes according to the size uniform of institute's paving springboard, then lays in the above springboard.
(2) making of wheel fixing device:
Wheel fixing device mainly is comprised of cushion block, cushion block clamp, and wherein: the cushion block cross section is square, is formed the face width of its width 〉=gig track by Plate Welding; The cushion block clamp has two, and respectively with the welding of the both sides of cushion block, described cushion block clamp bottom all is drilled with threaded bore, in order to by puller bolt, cushion block is fixed on the gig track.
(3) making of adjustable end beam fixing device:
First the end with solid drawn pipe adopts pin bolt to be flexibly connected by connection deck and the junction steel plate that welds with it, the other end is welded with the shutoff steel plate, the integral body that consists of thus is two assemblies, then by the positive/negative thread bolt, two assemblies is linked together, and forms adjustable end beam fixing device.
(4) assembling:
Should note on-the-spot putting position during assembling, stay a wheel crane turnover passage; Must all bolt friction faces is good by specification handles before lifting.Then assemble according to following step.
the first step, determined the erect-position place of wheel crane according to the actual conditions of camp site, and the phase mutual edge distance according to eight wheels of gig is carried out telltale mark on the gig track, make the catercorner length error≤3mm of two butt beams, with wheel crane, the first end carriage is winched on the gig track again, reserve longitudinal separation according to telltale mark, bar formula level indicator is positioned on the first end carriage, after pulling chain block to adjust level, be fixedly welded on the gig track with adjustable end beam fixing device and the first end carriage, fix loose hook after set of wheels with wheel fixing device.Then lift the second end carriage, hanging method is identical with the hanging method of the first end carriage;
second step, lift two girders, specifically: junction steel plate and bolt are winched on the operation platform of high-altitude, the first girder is winched in the middle of two end carriages again, fix at the first girder two ends and slip rope, to control direction and the rotation of the first girder in the lifting uphill process, after the first girder is winched to two butt beams tops, allow the workman stand on end carriage, control the first girder, then allow the wheel crane crawl fall rope, allow the first girder slowly drop to the height of two butt beam levels, after adjusting level and height, with junction steel plate and bolt, that the first connection between girder and carriage is good, this moment should according to by the centre to the order at two ends at twice with bolt tightening, tighten loose hook after all bolts, then, adopt and first girder same procedure lifting the second girder,
In the 3rd step, the junction steel plate of the adjustable end beam fixing device that fixed end beam is used cuts off, and this moment, vehicle frame basically formed, then carried out other members of lifting device, the conventional installation of equipment, until the vehicle frame installation.
In the above-mentioned first step, when winching to the first end carriage on the gig track with wheel crane, can set four of suspension centres, wherein two is the main stress suspension centre, and another two are the horizontal suspension centre of adjustment, the level of regulating end carriages with 5 tons of chain blocks.During with wheel crane lifting the second end carriage, should note controlling on two butt beams the distance with the girder node, this distance is that the length of girder adds gap between two ends, and described gap between two ends can be 10mm.
In above-mentioned the 3rd step, other members of described lifting device, the conventional installation of equipment are: adopt and set up winch on the dry coke quenching steel structure platform, utilize the changed course pulley lift other members, equipment and install.Described other members, equipment comprise the machinery that hoists (as main hoisting reducer, equilibrium arm, power hydraulic pressure plate disc brake, roll device, lifting motor etc.), operation machinery (as secondary reducer, universal coupling, operation motor etc.), guide frame and coke jar cover etc.
Beneficial effect of the present invention is mainly:
1. easy construction: by building high-altitude operation platform, the workman is constructed convenient, safety is guaranteed.
2. improved installation quality: adopted wheel fixing device, changed original weld fixture apparatus, made the location after end carriage is installed more accurate; Adopted adjustable end beam fixing device, made the interval between two end carriages adjustable, erection work is more reliable, operability is stronger.
3. saving cost: adopt the present invention that coke dry quenching hoister device vehicle frame is installed, actv. has been saved the mechanical one-shift expense, has accelerated construction speed, has reduced cost.
The present invention compares with conventional construction method, and traditional hanging method needs 40 days durations, and 500 tons of wheel crane admission fees of required employing are 500,000 yuan, and One-Shift Costs is 300,000 yuan; And hanging method of the present invention needs 35 days durations, and 200 tons of wheel crane admission fees that adopt are 20,000 yuan, and One-Shift Costs is 80,000 yuan, and 200 tons of wheel cranes are more universal, are beneficial to construction.
Description of drawings
Fig. 1 is the example block diagram that coke dry quenching hoister device frame high-altitude burst of the present invention is installed.
Fig. 2 is the block diagram of wheel fixing device 7 in Fig. 1.
Fig. 3 is the use-case block diagram of wheel fixing device 7.
Fig. 4 is the block diagram of adjustable end beam fixing device 11 in Fig. 1.
In figure: 1. gig crossbeam; 2. high-altitude operation platform; 3. the first end carriage; 4. the second end carriage; 5. the first girder; 6. the second girder; 7. wheel fixing device; 8. cushion block; 9. cushion block clamp; 10. puller bolt; 11. adjustable end beam fixing device; 12. solid drawn pipe; 13. connection deck; 14. junction steel plate; 15. pin bolt; 16. shutoff steel plate; 17. positive/negative thread bolt; 18. wheel; 19. track.
The specific embodiment
Frame high-altitude piece mounting method of dry quenching lifter device provided by the invention, specifically: adopt≤300 tons of wheel cranes to divide the end carriage of chip part to hang on the gig track vehicle frame, again vehicle frame is divided the girder of chip part to hang in the middle of two end carriages, and assemble, assembling process carries out on the operation platform of high-altitude, original vehicle frame assembly working on ground is changed in the high-altitude complete; In high-altitude operation platform assembling vehicle frame process, first utilize the interval between adjustable end beam fixing device adjusting two end carriages, then utilize wheel fixing device with the two accurate location and installation of end carriage on the gig track, make the catercorner length error of two end carriages be no more than 3mm, with connection between girder and carriage, complete the installation of vehicle frame again.
The present invention is further described below in conjunction with embodiment and accompanying drawing.
The wheel fixing device 7 that the present invention uses, its structure mainly is comprised of cushion block 8, cushion block clamp 9 and puller bolt 10 as depicted in figs. 1 and 2, and wherein: cushion block 8 adopts the Plate Welding of thick 10mm to form, the cross section is square, and the width of cushion block 8 is more than or equal to the face width of track 19; The end that cushion block 8 contacts with wheel 18 is processed into cambered surface, in order to withstand closely wheel 18.Cushion block clamp 9 adopts the steel plate of thick 20mm to make, and this steel plate has two, and respectively with the both sides welding of cushion block 8, the steel plate bottom is drilled with the hole, and leaves screw thread, in order to puller bolt 10 is installed.Puller bolt 10 adopts the M22 bolt, is used for cushion block 8 is fixed on track 19.
The wheel fixing device 7 that the present invention uses, as Fig. 1, shown in Figure 3, it uses after the first end carriage 3 or the second end carriage 4 liftings put in place.
During use, cushion block 8 card of wheel fixing device 7 is placed between track 19 and wheel 18, makes cushion block 8 withstand closely wheel 18, tighten the puller bolt 10 on cushion block clamp 9, make it clamp track 19.
The adjustable end beam fixing device 11 that the present invention uses, its structure as shown in Figure 4, mainly be comprised of solid drawn pipe 12, connection deck 13, connecting panel 14, pin bolt 15, shutoff steel plate 16 and positive/negative thread bolt 17, wherein: an end of solid drawn pipe 12 is welded to connect deck 13; Junction steel plate 14 adopts pin bolt 15 and is connected deck 13 flexible connections; The other end of solid drawn pipe 12 is welded with shutoff steel plate 16.The integral body that solid drawn pipe 12, connection deck 13, connection slab 14, pin bolt 15 and shutoff steel plate 16 form is two groups, and is connected by positive/negative thread bolt 17.In this example, solid drawn pipe 12 adopts the solid drawn pipe of diameter 80mm to manufacture; Connecting deck 13 adopts the Plate Welding of thick 20mm to become " U " type, outer profile size is 200mm * 80mm * 65mm, connect an end welding of " U " type closed end and the solid drawn pipe 12 of deck 13, the open end that connects deck 13 is drilled with perforation, in order to insert pin bolt 15; Junction steel plate 14 adopts the steel plate of thick 20mm to make, and the one head is drilled with the hole, in order to insert pin bolt 15; Shutoff steel plate 16 adopts the steel plate of thick 30mm to make, and its diameter is 100mm, and the centre makes porose and leaves screw thread, so that being screwed into of positive/negative thread bolt 17; The middle part of positive/negative thread bolt 17 is square, in order to adopt spanner to screw bolt; The both sides hand of spiral of positive/negative thread bolt 17 is symmetry direction, when screwing bolt, completes simultaneously a side clickwise and opposite side left-hand revolution, realizes the flexible of adjustable end beam fixing device 8.
The adjustable end beam fixing device 11 that the present invention uses, as shown in Figure 1 and Figure 4, it uses after the first end carriage 3 or the second end carriage 4 liftings put in place.
During use, a side and the first end carriage 3 or the second end carriage 4 welding with adjustable end beam fixing device 11, the body frame of opposite side and 45.96 meters platforms of dry coke quenching steel structure is fixed, and can by rotating positive/negative thread bolt 17, adjust the spacing of the first end carriage 3 and the second end carriage 4.
Frame high-altitude piece mounting method of dry quenching lifter device provided by the invention, its step comprises: set up high-altitude operation platform 2, the making of wheel fixing device 7, the making of adjustable end beam fixing device 11, ground assembling and the lifting of dry coke quenching auxiliary vehicle frame.
1. set up high-altitude operation platform 2:
As shown in Figure 1: high-altitude operation platform 2 is comprised of bracket, H shaped steel, springboard and guardrail, and wherein bracket is welded on gig crossbeam 1, and the two ends of H shaped steel is placed on the bracket surface, and with 1 welding of gig crossbeam, springboard is laid on H shaped steel surface.
Described high-altitude operation platform 2 is the working platforms of hoist installation, and its length is the distance between gig crossbeam 1, and width is the projection width of lifting device.After installing body frame, set up and weld 22#H shaped steel between gig crossbeam 1, the spacing of H shaped steel distributes according to the size uniform of the wooden springboard of spread, and then lays in the above springboard.At the both sides of platform welding guardrail.
2. the making of wheel fixing device 7:
Wheel fixing device 7 mainly is comprised of cushion block 8, cushion block clamp 9 and puller bolt 10.
Described cushion block 8 adopts the Plate Welding of thick 10mm to form, and the cross section is square, and the width of cushion block 8 is more than or equal to the face width of track 19; The end that cushion block 8 contacts with wheel 18 is processed into cambered surface, in order to withstand closely wheel 18.Cushion block clamp 9 adopts the steel plate of thick 20mm to make, and this steel plate has two, and respectively with the both sides welding of cushion block 8, the steel plate bottom is drilled with the hole, and leaves screw thread, in order to puller bolt 10 is installed.Puller bolt 10 can adopt the M22 bolt, is used for cushion block 8 is fixed on track 19.
3. the making of adjustable end beam fixing device 11:
Adjustable end beam fixing device 11 mainly is comprised of solid drawn pipe 12, connection deck 13, junction steel plate 14, pin bolt 15, shutoff steel plate 16 and positive/negative thread bolt 17.
One end of described solid drawn pipe 12 is welded to connect deck 13; Junction steel plate 14 adopts pin bolt 15 and is connected deck 13 flexible connections; The other end of solid drawn pipe 12 is welded with shutoff steel plate 16.The integral body that solid drawn pipe 12, connection deck 13, junction steel plate 14, pin bolt 15 and shutoff steel plate 16 form is two groups, and is connected by positive/negative thread spiral shell 17.
4. the assembling of the ground of dry coke quenching auxiliary vehicle frame and lifting:
The assembling of first step dry coke quenching auxiliary vehicle frame ground:
(1) driving and driven set of wheels and the first end carriage 3, the second end carriage 4 are assembled on ground.
(2) first girders 5 and the second girder 6 assemble with the bottom operation platform, and the traveling first class reducer is arranged on the second girder 6, and remaining primary structural component is assembled, and for example the Machine Room are assembled into four, and ceiling is assembled into two.
(3) note on-the-spot putting position when assembling, stayed a wheel crane turnover passage.Must all high strength bolt friction faces is good by specification handles before lifting.7 days above work used times are with 8～25 tons of wheel crane cooperatings.
The second step primary member is installed:
Primary member comprises the first end carriage 3, the second end carriage 4, the first girder 5 and the second girder 6.
(1) first end carriage 3, the second end carriage 4 liftings.
Actual conditions according to the camp site, determined the erect-position place of wheel crane, and according to wheel crane erect-position position, can select 200 tons of wheel cranes when the parameters such as suspended object spare, the heaviest suspended object spare (17 tons), the highest suspended object spare (53m) are best according to wheel crane performance field position farthest.
First carry out telltale mark according to the phase mutual edge distance of eight wheels of gig on the gig track, make the catercorner length error of the first end carriage 3, the second end carriage 4 be no more than 3mm.Then with wheel crane, the first end carriage 3 is winched on gig track 19 and (set four of suspension centres, two is the main stress suspension centre, two for adjusting horizontal suspension centre, regulate the level of end carriage with 5 tons of chain blocks), reserve longitudinal separation according to telltale mark, bar formula level indicator is positioned on the first end carriage 3, after pulling chain block to adjust level, be fixedly welded on the gig track with adjustable end beam fixing device 11 and the first end carriage 3, use wheel fixing device 7 fixing vehicle wheels before and after wheel.The hanging method that gets final product loose hook block second end carriage 4(the second end carriage 4 after fixing is identical with the first end carriage 3), must be noted that to control on two end carriages the distance (for the length of girder adds gap between two ends, gap between two ends is 10mm) with the girder node when lifting the second end carriage 4.
(2) first girders 5 and the second girder 6 liftings.
The lifting order of two girders must decide according to the position of wheel crane and vehicle frame, is undertaken by first rear near principle far away.first connecting panel and high strength bolt are winched to driving surface, then in the middle of the first girder 5 being winched to two end carriages, (four of suspension centres are established in lifting, two main stress suspension centres, two horizontal adjustment suspension centres, regulate level with 5 tons of chain blocks, the concrete same end carriage of mode), fix at the first girder 5 two ends and slip rope, to control direction and the rotation of the first girder 5 in the lifting uphill process, the first girder 5 is winched to two butt beams tops approximately behind the 100mm place, can allow the workman stand on end carriage, control the first girder 5, then allow the wheel crane crawl fall rope, allow the first girder 5 slowly drop to the height of two butt beam levels.After adjusting level and height, with junction steel plate 14, the first girder 5 is connected (method of attachment is carried out according to the high strength bolt job specifications) with end carriage, after putting on all high strength bolts, according at twice high strength bolt being tightened (twist moment the end of high strength bolt is 460N.M, and just twisting moment is 50%) by the centre to the order at two ends.Get final product loose hook after tightening all high strength bolts.The hanging method of the second girder 6 is identical with the first girder 5.
All high strength bolts must be twisted one time again after lifting the second girder 6, the junction steel plate 14 of the adjustable end beam fixing device 11 that fixed end beam can be used cuts off.This moment, vehicle frame basically formed, then carried out other members of lifting device, the conventional installation of equipment, until installation.
Effect: after the vehicle frame of dry coke quenching auxiliary is installed and adopted the inventive method, actv. utilizes the equipment such as high-altitude operation platform, wheel fixing device, adjustable end beam fixing device to complete in the high-altitude installation on ground work of gig vehicle frame, successfully utilize little tonnage wheel crane to reach the purpose that the gig vehicle frame is installed, make the dry coke quenching engineering construction duration no longer be subjected to the restriction of large automobile crane, saved construction cost, illustrated that the effect of the inventive method is remarkable.
Above explanation is only Application Example of the present invention, certainly can not limit with this interest field of the present invention, and the equivalence of therefore doing according to the present patent application the scope of the claims changes, and still belongs to protection scope of the present invention.
Claims (7)
1. frame high-altitude piece mounting method of dry quenching lifter device, it is characterized in that: adopt≤300 tons of wheel cranes to divide two butt beams of chip part with vehicle frame and the set of wheels that is attached thereto is hung on the gig track, again vehicle frame is divided two girders and the annex of chip part to hang in the middle of two butt beams, then assemble on the operation platform of high-altitude, original vehicle frame assembly working on ground is changed in the high-altitude complete; In high-altitude operation platform assembling vehicle frame process, first utilize the interval between adjustable end beam fixing device adjusting two butt beams, and utilize wheel fixing device with the two accurate location and installation of butt beam on the gig track, then with connection between girder and carriage, complete the installation of vehicle frame; Described annex comprises the bottom operation platform that is connected with the second girder with the first girder, with the traveling first class reducer that is contained on the second girder;
The method comprises the following steps:
(1) set up the high-altitude operation platform:
The high-altitude operation platform is comprised of bracket, H shaped steel, springboard and guardrail, and wherein: bracket is welded on the gig crossbeam, and the two ends of H shaped steel is placed on the bracket surface, and with the welding of gig crossbeam, springboard is laid on H shaped steel surface; At the both sides of H shaped steel welding guardrail;
(2) making of wheel fixing device:
Wheel fixing device mainly is comprised of cushion block, cushion block clamp, and wherein: the cushion block cross section is square, is formed the face width of its width 〉=gig track by Plate Welding; The cushion block clamp has two, and respectively with the welding of the both sides of cushion block, described cushion block clamp bottom all is drilled with threaded bore, in order to by puller bolt, cushion block is fixed on the gig track;
(3) making of adjustable end beam fixing device:
First the end with solid drawn pipe adopts pin bolt to be flexibly connected by connection deck and the junction steel plate that welds with it, the other end is welded with the shutoff steel plate, the integral body that consists of thus is two assemblies, then by the positive/negative thread bolt, two assemblies is linked together, and forms adjustable end beam fixing device;
(4) assembling:
the first step, determined the erect-position place of wheel crane according to the actual conditions of camp site, and the phase mutual edge distance according to eight wheels of gig is carried out telltale mark on the gig track, make the catercorner length error≤3mm of two butt beams, with wheel crane, the first end carriage is winched on the gig track again, reserve longitudinal separation according to telltale mark, bar formula level indicator is positioned on the first end carriage, after pulling chain block to adjust level, be fixedly welded on the gig track with adjustable end beam fixing device and the first end carriage, fix loose hook after set of wheels with wheel fixing device, then lift the second end carriage, same the first end carriage hanging method of hanging method,
second step, lift two girders, specifically: junction steel plate and bolt are winched on the operation platform of high-altitude, the first girder is winched in the middle of two end carriages again, fix at the first girder two ends and slip rope, to control direction and the rotation of the first girder in the lifting uphill process, after the first girder is winched to two butt beams tops, allow the workman stand on end carriage, control the first girder, then allow the wheel crane crawl fall rope, allow the first girder slowly drop to the height of two butt beam levels, after adjusting level and height, with junction steel plate and bolt, that the first connection between girder and carriage is good, this moment should according to by the centre to the order at two ends at twice with bolt tightening, tighten loose hook after all bolts, then, adopt and first girder same procedure lifting the second girder,
In the 3rd step, the junction steel plate of the adjustable end beam fixing device that fixed end beam is used cuts off, and this moment, vehicle frame basically formed, then carried out other members of lifting device, the conventional installation of equipment, until the vehicle frame installation.
2. frame high-altitude piece mounting method of dry quenching lifter device according to claim 1, it is characterized in that setting up between the gig crossbeam and during welded H section steel, the spacing of H shaped steel distributes according to the size uniform of institute's paving springboard, then lays in the above springboard.
3. frame high-altitude piece mounting method of dry quenching lifter device according to claim 1, should note on-the-spot putting position when it is characterized in that assembling, and stayed a wheel crane turnover passage; Must all bolt friction faces is good by specification handles before lifting.
4. frame high-altitude piece mounting method of dry quenching lifter device according to claim 1, when it is characterized in that winching to the first end carriage on the gig track with wheel crane, set four of suspension centres, wherein two is the main stress suspension centre, another two are the horizontal suspension centre of adjustment, the level of regulating end carriages with 5 tons of chain blocks.
5. frame high-altitude piece mounting method of dry quenching lifter device according to claim 1 when it is characterized in that with wheel crane lifting the second end carriage, should be noted controlling on two butt beams the distance with the girder node, and this distance is that the length of girder adds gap between two ends.
6. frame high-altitude piece mounting method of dry quenching lifter device according to claim 5, is characterized in that described gap between two ends is 10mm.
7. frame high-altitude piece mounting method of dry quenching lifter device according to claim 1, it is characterized in that other members of described lifting device, the conventional installation of equipment are: adopt and set up winch on the dry coke quenching steel structure platform, utilize the changed course pulley lift other members, equipment and install; Described other members, equipment comprise the machinery that hoists, operation machinery, guide frame and coke jar cover.
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| CN107487729A (en) * | 2017-08-24 | 2017-12-19 | 芜湖市长江起重设备制造有限公司 | A kind of cable drum device of bridge crane |
| CN109823969A (en) * | 2019-02-02 | 2019-05-31 | 广东博智林机器人有限公司 | One kind climbing device for hoisting |
| CN111591901B (en) * | 2020-06-16 | 2022-06-10 | 任丘市杰华起重机有限公司 | Double-hook bridge crane |
| CN113137072B (en) * | 2021-04-14 | 2022-06-17 | 方远建设集团股份有限公司 | Construction method of high-altitude track mobile steel platform |
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| CN101760205A (en) * | 2008-11-25 | 2010-06-30 | 中冶成工上海五冶建设有限公司 | Method for installing coke dry quenching hoister |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760205A (en) * | 2008-11-25 | 2010-06-30 | 中冶成工上海五冶建设有限公司 | Method for installing coke dry quenching hoister |
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