CN104058345A - Sliding wheel mechanism for lifting machine - Google Patents

Sliding wheel mechanism for lifting machine Download PDF

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Publication number
CN104058345A
CN104058345A CN201410149994.3A CN201410149994A CN104058345A CN 104058345 A CN104058345 A CN 104058345A CN 201410149994 A CN201410149994 A CN 201410149994A CN 104058345 A CN104058345 A CN 104058345A
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China
Prior art keywords
sliding wheel
fixed pulley
pulley
group
running block
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CN201410149994.3A
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Chinese (zh)
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CN104058345B (en
Inventor
胡水根
李太周
胡斌
江萍
郭志康
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Zhengzhou Kerun Mechanical & Electron Engineering Co Ltd
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Zhengzhou Kerun Mechanical & Electron Engineering Co Ltd
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Priority to CN201410149994.3A priority Critical patent/CN104058345B/en
Publication of CN104058345A publication Critical patent/CN104058345A/en
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Publication of CN104058345B publication Critical patent/CN104058345B/en
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  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Jib Cranes (AREA)

Abstract

The invention discloses a sliding wheel mechanism for a lifting machine. The sliding wheel mechanism is characterized by comprising a fixed sliding wheel group mounted at the head part of a lifting beam through a fixed sliding wheel bracket and corresponding connecting pieces, a first movable sliding wheel group mounted on a first movable sliding wheel bracket, a second movable sliding wheel group and lifting hooks mounted on a second sliding wheel bracket; the fixed sliding wheel group comprises a left fixed sliding wheel and a right fixed sliding wheel arranged at the upper part of the fixed sliding wheel bracket, as well as a fixed sliding wheel group arranged at the lower part of the fixed sliding wheel bracket; the first movable sliding wheel group is mounted under the fixed sliding wheel group in a lifting manner through tractive steel wire ropes; the second movable sliding wheel bracket mounted the second movable sliding wheel group and the lifting hooks is combined with the lower end of the first movable sliding wheel bracket through a detachable connecting piece.

Description

A kind of pulley mechanism of elevator machinery
Technical field
The present invention relates to a kind of pulley mechanism of elevator machinery, relate to specifically a kind of device that large scale hoisting machinery pulley mechanism converts multiplying power at work.
Background technology
In the design of hoisting crane, reasonably determine that pulley block ratio is very important, generally, wish to realize heavy-duty low-speed, underloading at a high speed.According to this principle of design, during lifting big elevating capacity, generally select large multiplying power, this can be avoided selecting too thick steel rope, has reduced accordingly lifting velocity simultaneously., when same mechanism lifts by crane medium and small hoisting capacity, if do not change pulley multiplying power, still use very low lifting velocity, just can not bring into play the effective power of this mechanism, service efficiency is too low.The large scale hoisting machinery biggest lifting capacity can reach hundreds of tons at present, and lifting altitude reaches hundreds of rice, and during by the lifting biggest lifting capacity, determined lifting velocity is very little, has wanted hundred meters of even working cycle of hundreds of meters, and required time is just very long.In an engineering, the biggest lifting capacity is not frequent use, generally account for 5 ~ 10% left and right of whole quantities, more than 90% be all the article of medium and small tonnage, therefore, if can not convert multiplying power for large scale hoisting machinery, with a speed lifting, the weight-lifting equipment most of the time is all in low efficiency work all the time, cause low load with strong power, configuration and energy dissipation, be unfavorable for energy-conserving and environment-protective.If can change quickly and efficiently as required at work multiplying power, when lifting big elevating capacity, select large multiplying power, when the little hoisting capacity of lifting, can select little multiplying power, thereby improve lifting velocity, the allocative abilities that so just takes full advantage of weight-lifting equipment, has improved work efficiency.
The method that the most simply changes multiplying power in prior art is exactly artificial wire rope handling again, in more than hundred meters high-altitudes, wants manually again wire rope handling and is difficult to, and even may not complete.And the lifting of part is not in same period greatly in engineering, being often that large small workpiece is interspersed carries out, and often convert multiplying power, depends merely on artificial wire rope handling just inadvisable.In addition, the multiplying power of large scale hoisting machinery is all very large, so its wiring system is also very complicated, for the wiring system of such complexity, want light convenient replacing multiplying power just more difficult, therefore nobody can solve and in the work of large multiplying power assembly pulley, convert this difficult problem of multiplying power so far.
Summary of the invention
Object of the present invention provides for existing weak point in above-mentioned prior art just a kind of a kind of rope winding device that thereby quick-replaceable multiplying power is raised the efficiency as required in can be in working order.
Object of the present invention can realize by the following technical solutions:
The pulley mechanism of elevator machinery of the present invention comprise and by fixed pulley support and corresponding attaching parts be arranged on crane arm head fixed pulley group, be arranged on the first running block on the first moving pulley bracket, be arranged on the second running block and suspension hook on the second moving pulley bracket; Described fixed pulley group is to consist of two of the left and right fixed pulley and the bottom fixed pulley group that are arranged on fixed pulley support top, described the first running block is lifted on fixed pulley group below by haulage cable, and the second moving pulley bracket that the second running block and suspension hook are installed combines with the first moving pulley bracket lower end by detouchable attaching parts.
The axis that is positioned at two fixed pulleys in left and right on fixed pulley support top in the present invention is offset to respectively the left and right sides of bottom fixed pulley group axis, and the distance of two the fixed pulley outermost wheel rims in top is greater than the external diameter of bottom fixed pulley group.Pulley external diameter in described the first running block is less than the pulley external diameter in the second running block.
Principle of work of the present invention is as follows:
Running block is divided into two groups, and according to multiplying power needs, two groups of running blocks can complete wiring system with fixed pulley group together, and lifting article, also can only have one group of running block and fixed pulley group to complete wiring system, lifting article.Be exactly that while needing large multiplying power, two groups of movable pulleys move together specifically, while needing little multiplying power, by first, second running block separately, only have the second running block action, the first running block and fixed pulley group are fixed together and do not participate in work.Two groups of pulley quantity of running block require to determine according to conversion multiplying power, by two groups of pulley quantity, change, and can realize the requirement of multiple zoom rate.
Beneficial effect of the present invention is as follows:
1, first solved and in mode of operation, changed steel rope multiplying power problem.Work efficiency, the applicable performance of hoisting crane are improved.
2, solved the problem of large multiplying power pulley mechanism zoom rate.The present invention is divided into running block two groups cleverly, distributes and realizes different zoom rate requirements, thereby solved the problem of large multiplying power pulley mechanism zoom rate according to different pulley quantity.For large scale hoisting machinery, owing to having solved zoom rate problem, work efficiency is improved greatly, more can embody its preceence.
3, simple structure, convenient to operation.The present invention has utilized barodynamics principle very cleverly, very lightly realizes rapidly multiplying power conversion.Can conversion mutually between large multiplying power and little multiplying power rapidly.
4,, according to need of work, can realize multiple zoom rate combination.
5, due to convenient to operation, efficiency is high, and the ability of lifting mechanism is fully utilized, energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is that multiplying power of the present invention is 8 schematic diagram.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is that multiplying power of the present invention is 2 schematic diagram.
Fig. 4 is the A-A cutaway view of Fig. 3.
Fig. 5 is that multiplying power of the present invention is 8 wiring figure.
Fig. 6 is that multiplying power of the present invention is 2 wiring figure.
Sequence number in figure: 1, right fixed pulley 2, left fixed pulley 3, bottom fixed pulley group 4, fixed pulley support 5, the first running block 6, the second running block 7, suspension hook group 8, haulage cable 9 first moving pulley brackets 10, bearing pin 11, the second moving pulley bracket 12, reel 13, crane arm head leading sheave.
The specific embodiment
The present invention is further described below with reference to embodiment (accompanying drawing):
As shown in Figure 1, 2, the pulley mechanism of elevator machinery of the present invention comprise and by fixed pulley support 4 and corresponding attaching parts be arranged on crane arm head fixed pulley group, be arranged on the first running block 5 on the first moving pulley bracket 9, be arranged on the second running block 6 and suspension hook group 7 on the second moving pulley bracket 11; Described fixed pulley group is to consist of two of the left and right fixed pulley 1,2 and the bottom fixed pulley group 3 that are arranged on fixed pulley support top, described the first running block is lifted on fixed pulley group below by haulage cable 8, and the second moving moving pulley bracket 11 that the second running block and suspension hook group 7 are installed combines with the first moving moving pulley bracket lower end by detouchable bearing pin 10; The axis that is positioned at two of the left and right fixed pulley 1,2 on fixed pulley support top in described fixed pulley group is offset to respectively the left and right sides of bottom fixed pulley group 3 axis, and the distance of two the fixed pulley outermost wheel rims in top is greater than the external diameter of bottom fixed pulley group; Pulley external diameter in described the first running block is less than the pulley external diameter in the second running block.
Shown in Fig. 1,2,5, be that multiplying power is 8 structure and wiring scheme of installation.It according to the multiplying power that hoists, is 8 requirement, first group of fixed pulley quantity can be designed to 4, left, right two fixed pulleys and bottom fixed pulley group, bottom fixed pulley group is containing two fixed pulleys, its layout is as follows: fixed pulley support 4 line of centerss of take are benchmark, on fixed pulley support 4 lower planes, two bottom fixed pulley groups 3 that are coaxially set are arranged in left and right, above fixed pulley group 3 axis of bottom, place, right side arranges a right fixed pulley 1, in order to prevent the mutual interference of steel rope phase, above fixed pulley group 3 left sides, bottom, arrange left fixed pulley 2, by left fixed pulley 2, steel rope is chosen outward, avoided steel rope interference, be positioned at two groups of running blocks of bottom fixed pulley group 3 arranged beneath, first moving pulley bracket 9 line of centerss of take are benchmark, arrange up and down two row's pulleys, on arrange and put 3 pulleys and form the first running block 5, under arrange and put 1 pulley and form the second running block 6, these two groups of movable pulleys are arranged on first with bearing pin respectively, second liang of moving pulley bracket 9, on 11, two moving pulley brackets 9, 11 are linking together with bearing pin 10, by steel rope and suspension hook group, link together, same piece 6 external diameters are greater than part 5 external diameters, in order to avoid steel rope disturbs, so just having completed 8 multiplying power wirings arranges, its wiring figure as shown in Figure 5, when lifting 160 ton hours, just adopt this multiplying power, now maximum lifting velocity is 10m/min.
According to building-site situation, under more susceptible condition, be 40 tons of following goods of lifting, account for 90% left and right of whole quantities, at this moment need multiplying power to become 2, on 8 multiplying power bases, first whole suspension hook is stood on to ground, the bearing pin 10 of dismantling, make the first moving pulley bracket 9 separated with the second moving pulley bracket 11, start lifting mechanism, part 5 is promoted, when part 5 is encountered part 4 lower plane, stop promoting, part 5 is fixed together by raising line pulling force and part 4, do not participate in work, now only has part 6 in work, its arrangement of mechanism figure is as accompanying drawing 3, shown in 4, its wiring figure as shown in Figure 6, at this moment multiplying power is 2.Now maximum lifting velocity is 40m/min, is 8 to compare with multiplying power, and speed has promoted 4 times.
With 200 meters of calculating of lifting altitude, when multiplying power is 8, maximum lifting velocity is 10m/min, and completing a upper and lower working cycle needs 40 minutes; When multiplying power is 2, maximum lifting velocity is 40m/min, and completing a upper and lower working cycle needs 10 minutes, and efficiency improves greatly.

Claims (3)

1. a pulley mechanism for elevator machinery, is characterized in that: it comprise and by fixed pulley support and corresponding attaching parts be arranged on crane arm head fixed pulley group, be arranged on the first running block on the first moving pulley bracket, be arranged on the second running block and suspension hook on the second moving pulley bracket; Described fixed pulley group is to consist of two of the left and right fixed pulley and one of the bottom fixed pulley group that are arranged on fixed pulley support top, described the first running block is lifted on fixed pulley group below by haulage cable, and the second moving pulley bracket that the second running block and suspension hook are installed combines with the first moving pulley bracket lower end by detouchable attaching parts.
2. the pulley mechanism of elevator machinery according to claim 1, it is characterized in that: the axis that is positioned at two fixed pulleys in left and right, fixed pulley support top is offset to respectively the left and right sides of bottom fixed pulley group axis, and the distance of two the fixed pulley outermost wheel rims in top is greater than the external diameter of bottom fixed pulley group.
3. the pulley mechanism of elevator machinery according to claim 1, is characterized in that: the pulley external diameter in described the first running block is less than the pulley external diameter in the second running block.
CN201410149994.3A 2014-04-15 2014-04-15 A kind of pulley mechanism of hoisting machinery Active CN104058345B (en)

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CN104058345A true CN104058345A (en) 2014-09-24
CN104058345B CN104058345B (en) 2016-06-08

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE592494C (en) * 1931-10-31 1934-02-08 Regan Forge & Eng Co Crown block device
JPS6238294U (en) * 1985-08-28 1987-03-06
GB2176456B (en) * 1985-04-26 1988-04-07 Man Wolffkran Apparatus for changing over the operation of the lifting cable in a crane
CN2764754Y (en) * 2004-12-30 2006-03-15 大连重工·起重集团有限公司 Four-cable winding apparatus for steel cable of crane
CN201961999U (en) * 2010-12-28 2011-09-07 北京中建正和建筑机械施工有限公司 Hoisting mechanism of tower crane
CN202321977U (en) * 2011-11-02 2012-07-11 中联重科股份有限公司 Tower crane and hook assembly thereof
CN102627228A (en) * 2012-04-11 2012-08-08 中联重科股份有限公司 Tower crane and hanger assembly of tower crane
CN102887426A (en) * 2012-09-27 2013-01-23 山东丰汇设备技术有限公司 Full-magnification transformed and multi-fetching device interchangeable combined lifting device and using method for combined lifting device
CN202808209U (en) * 2012-09-14 2013-03-20 上海外高桥造船海洋工程有限公司 Portal crane
CN203095447U (en) * 2013-01-06 2013-07-31 浙江省建设机械集团有限公司 Automatic multiplying power variable lifting hook device
CN203767917U (en) * 2014-04-15 2014-08-13 郑州科润机电工程有限公司 Pulley mechanism of hoisting machinery

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE592494C (en) * 1931-10-31 1934-02-08 Regan Forge & Eng Co Crown block device
GB2176456B (en) * 1985-04-26 1988-04-07 Man Wolffkran Apparatus for changing over the operation of the lifting cable in a crane
JPS6238294U (en) * 1985-08-28 1987-03-06
CN2764754Y (en) * 2004-12-30 2006-03-15 大连重工·起重集团有限公司 Four-cable winding apparatus for steel cable of crane
CN201961999U (en) * 2010-12-28 2011-09-07 北京中建正和建筑机械施工有限公司 Hoisting mechanism of tower crane
CN202321977U (en) * 2011-11-02 2012-07-11 中联重科股份有限公司 Tower crane and hook assembly thereof
CN102627228A (en) * 2012-04-11 2012-08-08 中联重科股份有限公司 Tower crane and hanger assembly of tower crane
CN202808209U (en) * 2012-09-14 2013-03-20 上海外高桥造船海洋工程有限公司 Portal crane
CN102887426A (en) * 2012-09-27 2013-01-23 山东丰汇设备技术有限公司 Full-magnification transformed and multi-fetching device interchangeable combined lifting device and using method for combined lifting device
CN203095447U (en) * 2013-01-06 2013-07-31 浙江省建设机械集团有限公司 Automatic multiplying power variable lifting hook device
CN203767917U (en) * 2014-04-15 2014-08-13 郑州科润机电工程有限公司 Pulley mechanism of hoisting machinery

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