CN103342292B - Gantry crane with underneath type windlasses, three trolleys and four hanging points - Google Patents
Gantry crane with underneath type windlasses, three trolleys and four hanging points Download PDFInfo
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- CN103342292B CN103342292B CN201310216476.4A CN201310216476A CN103342292B CN 103342292 B CN103342292 B CN 103342292B CN 201310216476 A CN201310216476 A CN 201310216476A CN 103342292 B CN103342292 B CN 103342292B
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- fixed pulley
- reel
- dolly
- pulley
- trolleys
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Abstract
A gantry crane with underneath type windlasses, three trolleys and four hanging points belongs to the crane technology field, comprises four cart operation mechanisms, a gantry frame, four steel wire ropes, four hook pulley blocks and an electrical control system, and is characterized by further comprising four windlasses, two fixed pulley trolleys and a balance trolley. The four windlasses are mounted in pairs on a lower beam of the gantry frame; the two fixed pulley trolleys and the balance trolley are mounted on a main beam, and the balance trolley is mounted between the two fixed pulley trolleys; each fixed pulley trolley is provided with two fixed pulley blocks; the balance trolley is provided with four horizontal guide pulleys, a compensation winding drum and a balance winding drum; the compensation winding drum and the balance winding drum are a pair of steel wire rope winding drums with rope grooves rotating in opposite directions. The gantry crane has the effects and advantages that: lifting mechanisms are dispersedly mounted on the gantry frame and the three trolleys, and differences in height between the hanging points can be controlled, so that the whole machine is low in height, light in weight and easy to maintain, and is especially suitable for large-scale equipment hoisting in a factory building.
Description
Technical field
The invention belongs to technical field of crane equipment, relate to a kind of winch underneath type three dolly four-point lifting transfer crane.
Background technology
Crane hoisting mechanism, usually by hoisting mechanism (comprising electrical motor, drg, retarder, reel), fixed pulley group, lifting hook pulley group, steel rope with end is fixed and balancing device forms.Four-point lifting hoisting crane is generally that lifting mechanism is installed concentratedly on one or two crane carriages, the form of suspension centre also has two kinds: one is that four suspension centres are independent mutually, will inevitably be there is the situation only having three suspension centre carryings in this, cause the design load of winch and steel rope system to be multiplied; Another kind is two suspension centres of side in four suspension centres is do not have mutually associated independent suspension centre, and two suspension centres of opposite side are with equalizer pulley or the compensating bar balance suspension centre as balancing device, i.e. so-called " four-point hoisting three-point balancing ".
The transfer crane of hoisting large-size equipment, usually operation in factory building, except requiring to be convenient to, except dismounting, installation, transport, also require that complete machine height is low, lightweight, easy care.The lifting mechanism of gantry crane for general use concentrates on one or two dollies, makes the weight of dolly and size all very large.Because the pulley multiplying power of large-tonnage lifting mechanism is very large, so steel rope is very long, the diameter error of steel rope is very large on the impact of lifting altitude.To independent suspension centre, excessive diff-H can make the increasing of the load deflections of two suspension centres, the precision that hoists reduces; To balance suspension centre, if do balancing device with compensating bar, meeting is out of reach counterbalance effect because compensation stroke is short, if do balancing device with equalizer pulley,, a suspension centre may be there is at vertex, another suspension centre in the situation of nadir and cisco unity malfunction in the uncontrollable rope capacity by equalizer pulley again.
Summary of the invention
The object of this invention is to provide a kind of winch underneath type three dolly four-point lifting transfer crane, to solve the problem.
Technical scheme of the present invention is: this hoisting crane comprises four cover traveling mechanism of the larger traveller, a set of door frame, four steel ropes, four cover lifting hook pulley group and a set of electric control systems, it is characterized in that this hoisting crane also comprises four winchs, two fixed pulley dollies and a balancing trolley, four winchs are mounted in pairs on the cross sill of door frame, two fixed pulley dollies and a balancing trolley are arranged on girder, and balancing trolley is arranged between two fixed pulley dollies.Described two fixed pulley dollies, is characterized in that every platform fixed pulley dolly only having been installed two cover fixed pulley groups.Described balancing trolley, is characterized in that it having been installed four cover horizontally-guided pulleys, a set of compensation reel and a set of counterbalance drums; Described compensation reel and counterbalance drums, it is characterized in that they are cable drums that a pair grooving rotation direction is contrary, compensate corresponding two the independent suspension centres of reel, corresponding two the balance suspension centres of counterbalance drums, during hoisting crane work, compensate reel fixed link to fix, and counterbalance drums is freely rotated.The function compensating reel and counterbalance drums can be exchanged, and determines which reel makees compensation reel, fixed by compensation reel fixed link during use according to the centre-of gravity shift direction of hung load, load gravity center is partial to and compensates suspension centre corresponding to reel.Described four steel ropes, the corresponding suspension centre of steel cable, two steel ropes entering same fixed pulley dolly are one group, four steel ropes form two groups of suspension centres altogether, wherein one group be two independent suspension centres, another group be two balance suspension centres, it is characterized in that steel rope out from lifting drum, upwards enter vertically-guided pulley, in vertical plane surface, turn 90 °, along girder forward, level enters fixed pulley dolly; After two row's fixed pulleys arranged side by side of the fixed pulley group on fixed pulley dolly and two of lifting hook pulley group are arranged and completed winding in winding system that movable pulley arranged side by side forms, from fixed pulley out, along girder forward, level enters balancing trolley; Under the guiding of the horizontally-guided pulley on balancing trolley, 90 ° are turned in horizontal surface, vertical girder is inside, two steel ropes of independent suspension centre enter and compensate reel, two steel ropes of balance suspension centre enter counterbalance drums, enter two steel ropes of same reel, be enter the crown center of reel from two opposite senses, after reel is wound around same number of turns with contrary rotation direction, fix in reel ends respectively.When compensating reel or counterbalance drums rotation, two corresponding suspension centres can move round about, thus achieve the adjustment of suspension centre difference of height; Balance suspension centre can adjust automatically, and independent suspension centre needs artificial adjustment, and manual rotation compensates reel, can adjust to minimum by the absolute value of the difference of height of independent suspension centre.Because the winding number of turns of steel rope on reel is determined according to adjustment amount, after the steel rope in a direction discharges on reel, would not continue to rotate to same direction, thus the difference of height of suspension centre is controlled in scope of design.
Effect of the present invention and benefit are: lifting mechanism dispersed placement on door frame and three dollies, suspension centre diff-H is controlled, make complete machine height low, from heavy and light, easy care, be particularly suitable for the main equipment lifting in factory building.
Accompanying drawing explanation
Fig. 1 is the general assembly schematic diagram of this hoisting crane.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the birds-eye view of Fig. 1.
Fig. 4 is the wirerope-winding figure of this hoisting crane.
Fig. 5 is that steel rope is compensating the winding figure in reel and counterbalance drums.
Mark in figure: 1 traveling mechanism of the larger traveller, 2 winchs, 3 door frames, 4 vertically-guided pulleys, 5 lifting hook pulley groups, 6 fixed pulley dollies, 7 balancing trolleys, 8 steel ropes, 9 electric control systems, 10 fixed pulley groups, 11 compensate reel, 12 counterbalance drums, 13 horizontally-guided pulleys, 14 fixed links.
Detailed description of the invention
Below in conjunction with technical scheme and accompanying drawing, describe the specific embodiment of the present invention in detail.
As depicted in figs. 1 and 2, four cover winchs 2 are arranged on the cross sill of door frame 3, alleviate size and the weight of dolly on girder; A fixed pulley dolly 6 and two cover lifting hook pulley groups 5 form one group of two suspension centre, totally two groups of four suspension centres; The balancing trolley 7 being used for adjusting rope capacity and balance suspension centre load is arranged in the middle of two fixed pulley dollies 6.Fixed pulley dolly 6 and balancing trolley 7 all can along the girder parallel motions of door frame 3.
As shown in Figure 3, two fixed pulley dollies 6 have respectively been installed two cover fixed pulley groups 10, balancing trolley 7 has been installed four horizontally-guided pulleys 13, a set of tension pulley 11, a set of equalizer pulley 12.
As shown in Figure 4, steel rope 8 has four, suspension centre one, and two steel ropes entering same fixed pulley dolly are one group, and four steel ropes form two groups of suspension centres altogether, wherein one group be two independent suspension centres, another group is two balance suspension centres.Steel rope 8 from winch 2 out, upwards enters vertically-guided pulley 4, and in vertical plane surface, turn 90 °, along girder forward, level enters fixed pulley dolly 6; After two row's fixed pulleys arranged side by side of the fixed pulley group 10 on fixed pulley dolly 6 and two of lifting hook pulley group 5 are arranged and completed winding in winding system that movable pulley arranged side by side forms, from fixed pulley out, along girder forward, level enters balancing trolley 7; Under the guiding of the horizontally-guided pulley 13 on balancing trolley 7, in horizontal surface, turn 90 °, vertical girder is inside, and the steel rope of independent suspension centre enters and compensates reel 11, the steel rope of balance suspension centre enters counterbalance drums 12.
As shown in Figure 5, compensate reel 11 and counterbalance drums 12, it is the cable drum that a pair grooving rotation direction is contrary, enter two steel ropes compensating reel 11 or two steel ropes entering counterbalance drums 12, enter the crown center of reel from two opposite senses, after reel is wound around same number of turns with contrary rotation direction, fix in reel ends respectively.When compensation reel 11 or counterbalance drums 12 are rotated, corresponding two suspension centres can move round about, thus achieve the adjustment of suspension centre difference of height.During hoisting crane work, compensating reel 11 is fix with fixed link 14, and counterbalance drums 12 is freely rotated.Because the winding number of turns of steel rope 8 on reel is determined according to adjustment amount, after the steel rope in a direction discharges on reel, would not continue to rotate to same direction, thus the difference of height of suspension centre is controlled in scope of design.By changing the position of fixed link 14, the exchange function of reel 11 and counterbalance drums 12 can will be compensated.
Claims (4)
1. a winch underneath type three dolly four-point lifting transfer crane, comprise four cover traveling mechanism of the larger traveller, a set of door frame, four steel ropes, four cover lifting hook pulley groups, a set of electric control system, four winchs, two fixed pulley dollies and balancing trolleys, four winchs are mounted in pairs on the cross sill of door frame, two fixed pulley dollies and a balancing trolley are arranged on girder, and balancing trolley is arranged between two fixed pulley dollies; Described four steel ropes, the corresponding suspension centre of steel cable, two steel ropes entering same fixed pulley dolly are one group, four steel ropes form two groups of suspension centres altogether, wherein one group be two independent suspension centres, another group is two balance suspension centres, it is characterized in that: steel rope out from lifting drum, upwards enter vertically-guided pulley, in vertical plane surface, turn 90 °, along girder forward, level enters fixed pulley dolly; After two row's fixed pulleys arranged side by side of the fixed pulley group on fixed pulley dolly and two of lifting hook pulley group are arranged and completed winding in winding system that movable pulley arranged side by side forms, from fixed pulley out, along girder forward, level enters balancing trolley; Under the guiding of the horizontally-guided pulley on balancing trolley, 90 ° are turned in horizontal surface, vertical girder is inside, two steel ropes of independent suspension centre enter and compensate reel, two steel ropes of balance suspension centre enter counterbalance drums, enter two steel ropes of same reel, be enter the crown center of reel from two opposite senses, after reel is wound around same number of turns with contrary rotation direction, fix in reel ends respectively.
2. a kind of winch underneath type three dolly four-point lifting transfer crane according to claim 1, is characterized in that every platform fixed pulley dolly only having been installed two cover fixed pulley groups.
3. a kind of winch underneath type three dolly four-point lifting transfer crane according to claim 1, is characterized in that it having been installed four cover horizontally-guided pulleys, a set of compensation reel and a set of counterbalance drums.
4. a kind of winch underneath type three dolly four-point lifting transfer crane according to claim 3, is characterized in that they are cable drums that a pair grooving rotation direction is contrary, compensates reel fixed link and fixes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310216476.4A CN103342292B (en) | 2013-06-03 | 2013-06-03 | Gantry crane with underneath type windlasses, three trolleys and four hanging points |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310216476.4A CN103342292B (en) | 2013-06-03 | 2013-06-03 | Gantry crane with underneath type windlasses, three trolleys and four hanging points |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103342292A CN103342292A (en) | 2013-10-09 |
| CN103342292B true CN103342292B (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310216476.4A Expired - Fee Related CN103342292B (en) | 2013-06-03 | 2013-06-03 | Gantry crane with underneath type windlasses, three trolleys and four hanging points |
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| CN (1) | CN103342292B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663165A (en) * | 2013-11-27 | 2014-03-26 | 天津起重设备有限公司 | Intelligentized four-lifting-point auto-compensation balance large lifting assembling device |
| CN104085785A (en) * | 2014-04-12 | 2014-10-08 | 河南江河起重机有限公司 | Engineering gantry crane lifting apparatus |
| CN105384068A (en) * | 2015-12-22 | 2016-03-09 | 上海振华重工(集团)股份有限公司 | Four-bracket trolley for quayside container crane |
| CN112678683A (en) * | 2020-12-08 | 2021-04-20 | 中国化学工程第六建设有限公司 | Cross installation adjusting device of gasification equipment and steel structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2481687Y (en) * | 2001-04-21 | 2002-03-13 | 江西日月明实业有限公司 | Combined hydraulic portal crane |
| WO2008010643A1 (en) * | 2006-07-21 | 2008-01-24 | Kg Inc. | Hoist for low space crane |
| CN201068369Y (en) * | 2007-04-30 | 2008-06-04 | 中铁十七局集团有限公司 | Tyre type full-hydraulic cantilever gantry crane |
| CN102838045A (en) * | 2012-09-11 | 2012-12-26 | 武桥重工集团股份有限公司 | Extra-heavy type offshore crane three-hoisting point lifting mechanism |
| CN203295068U (en) * | 2013-06-03 | 2013-11-20 | 大连博瑞重工有限公司 | Underneath-type three-trolley four-suspension centre portal crane for winch |
-
2013
- 2013-06-03 CN CN201310216476.4A patent/CN103342292B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2481687Y (en) * | 2001-04-21 | 2002-03-13 | 江西日月明实业有限公司 | Combined hydraulic portal crane |
| WO2008010643A1 (en) * | 2006-07-21 | 2008-01-24 | Kg Inc. | Hoist for low space crane |
| CN201068369Y (en) * | 2007-04-30 | 2008-06-04 | 中铁十七局集团有限公司 | Tyre type full-hydraulic cantilever gantry crane |
| CN102838045A (en) * | 2012-09-11 | 2012-12-26 | 武桥重工集团股份有限公司 | Extra-heavy type offshore crane three-hoisting point lifting mechanism |
| CN203295068U (en) * | 2013-06-03 | 2013-11-20 | 大连博瑞重工有限公司 | Underneath-type three-trolley four-suspension centre portal crane for winch |
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| Publication number | Publication date |
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| CN103342292A (en) | 2013-10-09 |
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