CN104058345B - A kind of pulley mechanism of hoisting machinery - Google Patents
A kind of pulley mechanism of hoisting machinery Download PDFInfo
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- CN104058345B CN104058345B CN201410149994.3A CN201410149994A CN104058345B CN 104058345 B CN104058345 B CN 104058345B CN 201410149994 A CN201410149994 A CN 201410149994A CN 104058345 B CN104058345 B CN 104058345B
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- fixed pulley
- pulley
- running block
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- multiplying power
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- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
A kind of pulley mechanism of hoisting machinery, it is characterised in that: fixed pulley group, the first running block being arranged on the first moving pulley bracket, the second running block being arranged on the second moving pulley bracket and the suspension hook that it includes and is arranged on crane arm head by fixed pulley support and corresponding connector; Described fixed pulley group is to be become with one, bottom fixed pulley fabric by two, the left and right fixed pulley being arranged on fixed pulley frame upper, described first running block is lifted on below fixed pulley group by haulage cable, and the second moving pulley bracket being provided with the second running block and suspension hook is combined by dismountable connector and the first moving pulley bracket lower end.
Description
Technical field
The present invention relates to the pulley mechanism of a kind of hoisting machinery, particularly relate to large scale hoisting machinery pulley mechanism and convert a kind of device of multiplying power at work.
Background technology
In the design of crane, reasonably determine that pulley block ratio is critically important, generally, it is desirable to achieve heavy-duty low-speed, underloading are at a high speed. According to this design principle, generally selecting big multiplying power during lifting big elevating capacity, this can be avoided selecting too thick steel wire rope, reduces lifting velocity accordingly simultaneously. When same mechanism lifts by crane medium and small lifting capacity, if not changing pulley multiplying power, still with very low lifting velocity, cannot playing the effective power of this mechanism, service efficiency is too low. The current large scale hoisting machinery biggest lifting capacity is up to hundreds of tons, and lifting altitude reaches hundreds of meters, and during by the lifting biggest lifting capacity, determined lifting velocity is only small, has wanted hundred meters even cycle of operation of hundreds of meters, and required time is just very long. In an engineering, the biggest lifting capacity is not commonly used, typically constitute from about the 5 ~ 10% of whole quantities, more than 90% is all the article of medium and small tonnage, therefore, if can not convert multiplying power for large scale hoisting machinery, lifting by crane by a speed all the time, the crane gear most of the time is all work in poor efficiency, cause low load with strong power, configuration and energy waste, be unfavorable for energy-conserving and environment-protective. If multiplying power can be changed at work as required quickly and efficiently, when lifting by crane big elevating capacity, select big multiplying power, when lifting by crane little lifting capacity, it is possible to select little multiplying power, thus improving lifting velocity, thus take full advantage of the allocative abilities of crane gear, improve work efficiency.
The method the most simply changing multiplying power in prior art is exactly artificial wire rope handling again, but the high-altitude more than hundred meters, want artificial wire rope handling again and be difficult to, be not even likely to. And the lifting of big part is not in same period in engineering, being often that big small workpiece is interspersed carries out, and will often convert multiplying power, depend merely on artificial wire rope handling just inadvisable. Additionally, the multiplying power of large scale hoisting machinery is all very big, and therefore its wiring system is also very complicated, for so complicated wiring system, wanting light convenient replacing multiplying power to be just more difficult to, therefore nobody can solve conversion this difficult problem of multiplying power in the work of big multiplying power assembly pulley so far.
Summary of the invention
The one that the purpose of the present invention provides for weak point existing in above-mentioned prior art just can in working order in as required quick-replaceable multiplying power thus carrying high efficiency a kind of rope winding device.
The purpose of the present invention can realize by the following technical solutions:
Fixed pulley group, the first running block being arranged on the first moving pulley bracket, the second running block being arranged on the second moving pulley bracket and the suspension hook that the pulley mechanism of the hoisting machinery of the present invention includes and is arranged on crane arm head by fixed pulley support and corresponding connector; Described fixed pulley group is to be become with bottom fixed pulley fabric by two, the left and right fixed pulley being arranged on fixed pulley frame upper, described first running block is lifted on below fixed pulley group by haulage cable, and the second moving pulley bracket being provided with the second running block and suspension hook is combined by dismountable connector and the first moving pulley bracket lower end.
The axis being positioned at two fixed pulleys in left and right of fixed pulley frame upper in the present invention is offset to the left and right sides of bottom fixed pulley group axis respectively, and the distance of two the fixed pulley outermost wheel rims in top is more than the external diameter of bottom fixed pulley group. Pulley external diameter in described first running block is less than the pulley external diameter in the second running block.
The operation principle 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 together with fixed pulley group, lifts by crane article, it is also possible to only one group of running block completes wiring system with fixed pulley group, lifts by crane article. When specifically needing big multiplying power exactly, two groups of movable pulley actions together, it is necessary to during little multiplying power, by first, second running block separately, only the second running block action, the first running block and fixed pulley group are fixed together and are not involved in work. Two groups of pulley quantity of running block require to determine according to conversion multiplying power, are changed by two groups of pulley quantity, it is possible to achieve multiple zoom rate requirement.
Beneficial effects of the present invention is as follows:
1, change steel wire rope multiplying power problem in duty is first solved. The work efficiency of crane, applicable performance are improved.
2, the problem solving big multiplying power pulley mechanism zoom rate. Running block is divided into two groups by the present invention cleverly, realizes different zoom rate requirements according to different pulley quantity distribution, thus the problem solving big multiplying power pulley mechanism zoom rate. For large scale hoisting machinery, owing to solving zoom rate problem so that work efficiency is greatly improved, its superiority more can be embodied.
3, simple structure, convenient to operation. The present invention make use of barodynamics principle very cleverly, very lightly realizes multiplying power conversion rapidly. Can mutually change between big multiplying power and little multiplying power rapidly.
4, according to job demand, it is possible to achieve multiple zoom rate combines.
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 multiplying power of the present invention is the schematic diagram of 8.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is multiplying power of the present invention is the schematic diagram of 2.
Fig. 4 is the A-A sectional view of Fig. 3.
Fig. 5 is multiplying power of the present invention be 8 wiring figure.
Fig. 6 is multiplying power of the present invention be 2 wiring figure.
Sequence number in figure: 1, right fixed pulley 2, left fixed pulley 3, bottom fixed pulley group 4, fixed pulley support the 5, first running block the 6, second running block 7, suspension hook group 8, haulage cable 9 first moving pulley bracket 10, bearing pin the 11, second moving pulley bracket 12, reel 13, crane arm head leading block.
Detailed description of the invention
The present invention is further described below with reference to embodiment (accompanying drawing):
As shown in Figure 1, 2, fixed pulley group, the first running block 5 being arranged on the first moving pulley bracket 9, the second running block 6 being arranged on the second moving pulley bracket 11 and the suspension hook group 7 that the pulley mechanism of the hoisting machinery of the present invention includes and is arranged on crane arm head by fixed pulley support 4 and corresponding connector; Described fixed pulley group is to be made up of two, the left and right being arranged on fixed pulley frame upper fixed pulley 1,2 and bottom fixed pulley group 3, described first running block is lifted on below fixed pulley group by haulage cable 8, and the second dynamic moving pulley bracket 11 being provided with the second running block and suspension hook group 7 is combined with the first dynamic moving pulley bracket lower end by dismountable bearing pin 10; The axis being positioned at two, the left and right fixed pulley 1,2 of fixed pulley frame upper in described fixed pulley group is offset to the left and right sides of bottom fixed pulley group 3 axis respectively, and the distance of two the fixed pulley outermost wheel rims in top is more than the external diameter of bottom fixed pulley group; Pulley external diameter in described first running block is less than the pulley external diameter in the second running block.
To be multiplying power shown in Fig. 1,2,5 be 8 structure and wiring scheme of installation. the requirement that multiplying power is 8 according to hoisting, it can be 4 by first group of fixed pulley quantitative design, namely left, right two fixed pulleys and bottom fixed pulley group, bottom fixed pulley group is containing two fixed pulleys, its layout is as follows: with fixed pulley support 4 centrage for benchmark, on fixed pulley support 4 lower plane, two bottom fixed pulley groups 3 being coaxially set are arranged in left and right, a right fixed pulley 1 is arranged at fixed pulley group 3 axis upper right place, bottom, in order to prevent steel wire rope from interfering, left fixed pulley 2 arranged above on the left of bottom fixed pulley group 3, to be chosen outside steel wire rope by left fixed pulley 2, avoid steel wire rope interference, it is positioned at two groups of running blocks of bottom fixed pulley group 3 arranged beneath, with the first moving pulley bracket 9 centrage for benchmark, arrange two row's pulleys up and down, upper arrangement is put 3 pulleys and is constituted the first running block 5, lower arrangement is put 1 pulley and is constituted 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, linked together by steel wire rope and suspension hook group, same piece 6 external diameter is greater than part 5 external diameter, in order to avoid steel wire rope interference, this completes 8 multiplying power wirings to arrange, its wiring figure is as shown in Figure 5, when lifting by crane 160 ton hours, just adopt this multiplying power, now maximum lifting velocity is 10m/min.
According to building-site situation, it is less than 40 tons goods of lifting in more situations, account for about the 90% of whole quantities, at this moment need multiplying power is become 2, on 8 multiplying power bases, first whole suspension hook is stood on ground, dismantle bearing pin 10, the first moving pulley bracket 9 is made to separate with the second moving pulley bracket 11, start lifting mechanism, part 5 is promoted, when part 5 encounters part 4 lower plane, stop promoting, part 5 is fixed together by raising line pulling force and part 4, it is not involved in work, now only has part 6 in work, its arrangement of mechanism figure such as accompanying drawing 3, shown in 4, its wiring figure is as shown in Figure 6, at this moment multiplying power is 2. now maximum lifting velocity is 40m/min, is 8 compare with multiplying power, and speed improves 4 times.
With lifting altitude 200 meters calculating, when multiplying power is 8, maximum lifting velocity is 10m/min, and completing a lower work circulation needs 40 minutes;When multiplying power is 2, maximum lifting velocity is 40m/min, and completing a lower work circulation needs 10 minutes, and efficiency is greatly improved. .
Claims (3)
1. the pulley mechanism of a hoisting machinery, it is characterized in that: it includes being arranged on the fixed pulley group of crane arm head by fixed pulley support, corresponding connector, it is arranged on the first running block on the first moving pulley bracket, is arranged on the second running block on the second moving pulley bracket and suspension hook; Described fixed pulley group is to be become with one, bottom fixed pulley fabric by two, the left and right fixed pulley being arranged on fixed pulley frame upper, described first running block is lifted on below fixed pulley group by haulage cable, and the second moving pulley bracket being provided with the second running block and suspension hook is combined by dismountable connector and the first moving pulley bracket lower end.
2. the pulley mechanism of hoisting machinery according to claim 1, it is characterized in that: be positioned at the axis of two fixed pulleys about fixed pulley frame upper and be offset to the left and right sides of bottom fixed pulley group axis respectively, and the distance of two the fixed pulley outermost wheel rims in top is more than the external diameter of bottom fixed pulley group.
3. the pulley mechanism of hoisting machinery according to claim 1, it is characterised in that: the pulley external diameter in described first running block is less than the pulley external diameter in the second running block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410149994.3A CN104058345B (en) | 2014-04-15 | 2014-04-15 | A kind of pulley mechanism of hoisting machinery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410149994.3A CN104058345B (en) | 2014-04-15 | 2014-04-15 | A kind of pulley mechanism of hoisting machinery |
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| CN104058345A CN104058345A (en) | 2014-09-24 |
| CN104058345B true CN104058345B (en) | 2016-06-08 |
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| CN201410149994.3A Active CN104058345B (en) | 2014-04-15 | 2014-04-15 | A kind of pulley mechanism of hoisting machinery |
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Citations (11)
| 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 lifting hook assembly thereof |
| CN102627228A (en) * | 2012-04-11 | 2012-08-08 | 中联重科股份有限公司 | Tower crane and lifting hook assembly thereof |
| 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 |
-
2014
- 2014-04-15 CN CN201410149994.3A patent/CN104058345B/en active Active
Patent Citations (11)
| 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 lifting hook assembly thereof |
| CN102627228A (en) * | 2012-04-11 | 2012-08-08 | 中联重科股份有限公司 | Tower crane and lifting hook assembly thereof |
| 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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| Publication number | Publication date |
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| CN104058345A (en) | 2014-09-24 |
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