CN103342292A - 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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- CN103342292A CN103342292A CN2013102164764A CN201310216476A CN103342292A CN 103342292 A CN103342292 A CN 103342292A CN 2013102164764 A CN2013102164764 A CN 2013102164764A CN 201310216476 A CN201310216476 A CN 201310216476A CN 103342292 A CN103342292 A CN 103342292A
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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 the weight-lifting equipment technical field, relate to a kind of winch underneath type three dolly four-point lifting transfer cranes.
Background technology
Crane hoisting mechanism is made up of the fixing balancing device that reaches of hoisting mechanism (comprising electrical motor, drg, retarder, reel), fixed pulley group, lifting hook pulley group, steel rope and end usually.The four-point lifting hoisting crane generally is that lifting mechanism is installed concentratedly on one or two crane carriages, the form of suspension centre also has two kinds: a kind of is that four suspension centres are independent mutually, the situation that this three suspension centre carryings will inevitably occur having only causes the design load of winch and steel rope system to be multiplied; Another kind is that two suspension centres of a side are the mutual not independent suspension centres of contact in four suspension centres, 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 " 3 balances of 4 liftings ".
The transfer crane that hoisting large-size equipment is used, usually operation in factory building is except requiring to be convenient to dismounting, install, the transportation, requiring also that the complete machine height is low, in light weight, easy care.The lifting mechanism of gantry crane for general use concentrates on one or two dollies, makes that the weight of dolly and size are all very big.Because the pulley multiplying power of large-tonnage lifting mechanism is very big, so steel rope is very long, the diameter error of steel rope is very big to the influence of lifting altitude.To independent suspension centre, excessive diff-H can make the load deviation increasing of two suspension centres, the precision that hoists reduce; To the balance suspension centre, if do balancing device with compensating bar, can be because of the short out of reach counterbalance effect of compensation stroke, if do balancing device with equalizer pulley, uncontrollable rope capacity by equalizer pulley again, may occur a suspension centre at vertex, another suspension centre in the situation of nadir and cisco unity malfunction.
Summary of the invention
The purpose of this invention is to provide a kind of winch underneath type three dolly four-point lifting transfer cranes, to address the above problem.
Technical scheme of the present invention is: this hoisting crane comprises quadruplet traveling mechanism of the larger traveller, a cover door frame, four steel ropes, quadruplet lifting hook pulley group and cover 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 installed on the girder, and balancing trolley is installed between two fixed pulley dollies.Described two fixed pulley dollies is characterized in that only having installed on every fixed pulley dolly two cover fixed pulley groups.Described balancing trolley is characterized in that having installed on it quadruplet horizontally-guided pulley, a cover compensation reel and a cover counterbalance drums; Described compensation reel and counterbalance drums, it is characterized in that they are the opposite cable drums of a pair of grooving rotation direction, corresponding two the independent suspension centres of compensation reel, corresponding two the balance suspension centres of counterbalance drums, during hoisting crane work, the compensation reel is fixing with fixed link, and counterbalance drums is freely to rotate.The function of compensation reel and counterbalance drums can be exchanged, and determines that according to the centre-of gravity shift direction of hanging load which reel makees the compensation reel during use, will compensate reel and fix with fixed link, makes the load center of gravity be partial to the suspension centre that compensates the reel correspondence.Described four steel ropes, the corresponding suspension centre of steel cable, two steel ropes that enter same fixed pulley dolly are one group, four steel ropes constitute two groups of suspension centres altogether, and wherein one group is that two independent suspension centres, another group are two balance suspension centres, it is characterized in that the steel rope that comes out from lifting drum, upwards enter the vertically-guided pulley, change 90 ° in vertical plane surface, along girder forward, level enters the fixed pulley dolly; After finishing winding in the winding system that the two rows movable pulley arranged side by side of two row's fixed pulleys arranged side by side of the fixed pulley group on the fixed pulley dolly and lifting hook pulley group is formed, come out from fixed pulley, along girder forward, level enters balancing trolley; Under the guiding of the horizontally-guided pulley on the balancing trolley, in horizontal surface, change 90 °, vertical girder is inside, two steel ropes that two steel ropes of independent suspension centre enter compensation reel, balance suspension centre enter counterbalance drums, enter two steel ropes of same reel, be the crown center that enters reel from two opposite senses, after twining same number of turns with opposite rotation direction on the reel, fix in reel ends respectively.When compensation reel or counterbalance drums were rotated, corresponding two suspension centres can move round about, thereby have realized the adjustment of suspension centre difference of height; The balance suspension centre can be adjusted automatically, and independent suspension centre needs artificial the adjustment, and artificial rotation compensation reel can be adjusted to minimum with the absolute value of the difference of height of independent suspension centre.Because the winding number of turns of steel rope on reel determined according to adjustment amount, after the steel rope of a direction on the reel has been put, just can not continue to rotate to same direction, thereby the difference of height of suspension centre is controlled in scope of design.
Effect of the present invention and benefit are: the lifting mechanism dispersed placement on door frame and three dollies, the suspension centre diff-H is controlled, make the complete machine height low, from heavy and light, easy care, be particularly suitable for the main equipment lifting in the factory building.
Description of drawings
Fig. 1 is the general assembly scheme drawing 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 that the steel rope of this hoisting crane twines figure.
Fig. 5 is the winding figure of steel rope on compensation reel and counterbalance drums.
Mark among the 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 compensation reels, 12 counterbalance drums, 13 horizontally-guided pulleys, 14 fixed links.
The specific embodiment
Below in conjunction with technical scheme and accompanying drawing, be described in detail the specific embodiment of the present invention.
As depicted in figs. 1 and 2, quadruplet winch 2 is installed on the cross sill of door frame 3, has alleviated size and the weight of dolly on the girder; Fixed pulley dolly 6 and two cover lifting hook pulley groups 5 constitute one group of two suspension centre, totally two groups of four suspension centres; The balancing trolley 7 that is used for adjusting rope capacity and balance suspension centre load is installed in the middle of two fixed pulley dollies 6.Fixed pulley dolly 6 and balancing trolley 7 all can be along the girder parallel motions of door frame 3.
As shown in Figure 3, two cover fixed pulley groups 10 have been installed respectively on two fixed pulley dollies 6, four horizontally-guided pulleys 13, a cover tension pulley 11, a cover equalizer pulley 12 have been installed on the balancing trolley 7.
As shown in Figure 4, steel rope 8 has four, one of suspension centre, and two steel ropes that enter same fixed pulley dolly are one group, and four steel ropes constitute two groups of suspension centres altogether, and wherein one group is that two independent suspension centres, another group are two balance suspension centres.Steel rope 8 comes out from winch 2, upwards enters vertically-guided pulley 4, changes 90 ° in vertical plane surface, and along girder forward, level enters fixed pulley dolly 6; After finishing winding in the winding system that the two rows movable pulley arranged side by side of two row's fixed pulleys arranged side by side of the fixed pulley group 10 on fixed pulley dolly 6 and lifting hook pulley group 5 is formed, come out from fixed pulley, along girder forward, level enters balancing trolley 7; Under the guiding of the horizontally-guided pulley 13 on the balancing trolley 7, in horizontal surface, change 90 °, vertical girder is inside, and the steel rope that the steel rope of independent suspension centre enters compensation reel 11, balance suspension centre enters counterbalance drums 12.
As shown in Figure 5, compensation reel 11 and counterbalance drums 12, it is the opposite cable drum of a pair of grooving rotation direction, enter two steel ropes of compensation reel 11 or enter two steel ropes of counterbalance drums 12, it is the crown center that enters reel from two opposite senses, after twining same number of turns with opposite rotation direction on the reel, fix in reel ends respectively.When compensation reel 11 or counterbalance drums 12 were rotated, corresponding two suspension centres can move round about, thereby had realized the adjustment of suspension centre difference of height.During hoisting crane work, compensation reel 11 is fixing with fixed link 14, and counterbalance drums 12 is freely to rotate.Because the winding number of turns of steel rope 8 on reel determined according to adjustment amount, after the steel rope of a direction on the reel has been put, just can not continue to rotate to same direction, thereby the difference of height of suspension centre is controlled in scope of design.By changing the position of fixed link 14, can be with the exchange function of compensation reel 11 and counterbalance drums 12.
Claims (5)
1. winch underneath type three dolly four-point lifting transfer cranes, comprise quadruplet traveling mechanism of the larger traveller, a cover door frame, four steel ropes, quadruplet lifting hook pulley group and cover 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 installed on the girder, and balancing trolley is installed between two fixed pulley dollies.
2. according to described two the fixed pulley dollies of claim 1, it is characterized in that only having installed on every fixed pulley dolly two cover fixed pulley groups.
3. according to the described balancing trolley of claim 1, it is characterized in that having installed on it quadruplet horizontally-guided pulley, a cover compensation reel and a cover counterbalance drums.
4. institute is characterized in that according to described compensation reel and the counterbalance drums stated of claim 3 they are the opposite cable drums of a pair of grooving rotation direction, and the compensation reel is fixing with fixed link.
5. according to described four steel ropes of claim 1, the corresponding suspension centre of steel cable, two steel ropes that enter same fixed pulley dolly are one group, four steel ropes constitute two groups of suspension centres altogether, and wherein one group is that two independent suspension centres, another group are two balance suspension centres, it is characterized in that the steel rope that comes out from lifting drum, upwards enter the vertically-guided pulley, change 90 ° in vertical plane surface, along girder forward, level enters the fixed pulley dolly; After finishing winding in the winding system that the two rows movable pulley arranged side by side of two row's fixed pulleys arranged side by side of the fixed pulley group on the fixed pulley dolly and lifting hook pulley group is formed, come out from fixed pulley, along girder forward, level enters balancing trolley; Under the guiding of the horizontally-guided pulley on the balancing trolley, in horizontal surface, change 90 °, vertical girder is inside, two steel ropes that two steel ropes of independent suspension centre enter compensation reel, balance suspension centre enter counterbalance drums, enter two steel ropes of same reel, be the crown center that enters reel from two opposite senses, after twining same number of turns with opposite rotation direction on the reel, fix in reel ends respectively.
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 true CN103342292A (en) | 2013-10-09 |
| CN103342292B CN103342292B (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| 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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Cited By (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 |
Cited By (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103342292B (en) | 2015-05-27 |
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